diff --git a/build.gradle.kts b/build.gradle.kts
index 8f88d2c..1c05146 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -74,7 +74,7 @@ tasks {
     // Set the compatibility versions to 1.8
     withType<JavaCompile> {
         sourceCompatibility = "1.8"
-        targetCompatibility = "1.8"
+        targetCompatibility = "11"
     }
     listOf("compileKotlin", "compileTestKotlin").forEach {
         getByName<KotlinCompile>(it) {
@@ -83,7 +83,7 @@ tasks {
     }
 
     withType<Detekt> {
-        jvmTarget = "1.8"
+        jvmTarget = "11"
     }
 
     patchPluginXml {
diff --git a/detekt-config.yml b/detekt-config.yml
index f9b8d75..6c4f830 100644
--- a/detekt-config.yml
+++ b/detekt-config.yml
@@ -1,8 +1,9 @@
 # Default detekt configuration:
-# https://github.com/detekt/detekt/blob/master/detekt-core/src/main/resources/default-detekt-config.yml
+# https://github.com/detekt/detekt/blob/master/detekt-cli/src/main/resources/default-detekt-config.yml
 
 formatting:
   Indentation:
-    continuationIndentSize: 8
-  ParameterListWrapping:
-    indentSize: 8
+    active: true
+style:
+  ReturnCount:
+    max: 10
\ No newline at end of file
diff --git a/src/main/kotlin/dev/nybroe/collector/Util.kt b/src/main/kotlin/dev/nybroe/collector/Util.kt
index e5e024d..9e4b865 100644
--- a/src/main/kotlin/dev/nybroe/collector/Util.kt
+++ b/src/main/kotlin/dev/nybroe/collector/Util.kt
@@ -1,30 +1,7 @@
 package dev.nybroe.collector
 
-import com.intellij.openapi.util.text.StringUtil
-import com.intellij.psi.PsiElement
-import com.jetbrains.php.lang.PhpLangUtil
-import com.jetbrains.php.lang.psi.PhpPsiUtil
-import com.jetbrains.php.lang.psi.elements.Function
 import com.jetbrains.php.lang.psi.elements.FunctionReference
-import com.jetbrains.php.lang.psi.elements.StringLiteralExpression
-import com.jetbrains.php.lang.psi.elements.Variable
 
 fun FunctionReference.isGlobalFunctionCallWithName(name: String): Boolean {
-    return PhpLangUtil.isGlobalNamespaceFQN(this.namespaceName) && StringUtil.equals(this.name, name)
+    return this.name == name
 }
-
-
-fun PsiElement.canBeCalledAsLambda(): Boolean {
-    return this is Variable || this is StringLiteralExpression
-}
-
-
-fun PsiElement.resolveFunction(): Function? {
-    if (this.canBeCalledAsLambda()) {
-        val references = this.references
-        if (references.size == 1) {
-            return references[0].resolve() as? Function
-        }
-    }
-    return PhpPsiUtil.getChildByCondition<PsiElement>(this, Function.INSTANCEOF) as Function?
-}
\ No newline at end of file
diff --git a/src/main/kotlin/dev/nybroe/collector/inspections/ArrayMapToCollectionInspection.kt b/src/main/kotlin/dev/nybroe/collector/inspections/ArrayMapToCollectionInspection.kt
index 9731a86..4a2994f 100644
--- a/src/main/kotlin/dev/nybroe/collector/inspections/ArrayMapToCollectionInspection.kt
+++ b/src/main/kotlin/dev/nybroe/collector/inspections/ArrayMapToCollectionInspection.kt
@@ -27,4 +27,4 @@ class ArrayMapToCollectionInspection : PhpInspection() {
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/main/kotlin/dev/nybroe/collector/quickFixes/ArrayMapToCollectionQuickFix.kt b/src/main/kotlin/dev/nybroe/collector/quickFixes/ArrayMapToCollectionQuickFix.kt
index 31984f4..dc83470 100644
--- a/src/main/kotlin/dev/nybroe/collector/quickFixes/ArrayMapToCollectionQuickFix.kt
+++ b/src/main/kotlin/dev/nybroe/collector/quickFixes/ArrayMapToCollectionQuickFix.kt
@@ -8,7 +8,7 @@ import com.jetbrains.php.lang.psi.elements.FunctionReference
 
 class ArrayMapToCollectionQuickFix : LocalQuickFix {
     companion object {
-        const val QUICK_FIX_NAME = "Refactor array_map to collection"
+        const val QUICK_FIX_NAME = "Refactor 'array_map' to collection"
     }
 
     override fun getFamilyName(): String {
@@ -30,10 +30,10 @@ class ArrayMapToCollectionQuickFix : LocalQuickFix {
         }
 
         descriptor.psiElement.replace(
-            PhpPsiElementFactory.createStatement(
+            PhpPsiElementFactory.createMethodReference(
                 project,
                 "collect(${parameters[1].text})->map(${parameters[0].text})->all()"
             )
         )
     }
-}
\ No newline at end of file
+}
diff --git a/src/test/kotlin/dev/nybroe/collector/inspections/ArrayMapToCollectionInspectionTest.kt b/src/test/kotlin/dev/nybroe/collector/inspections/ArrayMapToCollectionInspectionTest.kt
index 73584ff..63ab87b 100644
--- a/src/test/kotlin/dev/nybroe/collector/inspections/ArrayMapToCollectionInspectionTest.kt
+++ b/src/test/kotlin/dev/nybroe/collector/inspections/ArrayMapToCollectionInspectionTest.kt
@@ -15,4 +15,12 @@ internal class ArrayMapToCollectionInspectionTest : InspectionTest() {
     fun testCallbackAndArray() {
         doTest("array_map-callback-and-array")
     }
+
+    fun testInNamespace() {
+        doTest("array_map-in-namespace")
+    }
+
+    fun testNamespacedArrayMap() {
+        doTest("array_map-in-namespace")
+    }
 }
diff --git a/src/test/resources/inspections/ArrayMapToCollectionInspection/array_map-in-namespace.after.php b/src/test/resources/inspections/ArrayMapToCollectionInspection/array_map-in-namespace.after.php
new file mode 100644
index 0000000..4b98ac5
--- /dev/null
+++ b/src/test/resources/inspections/ArrayMapToCollectionInspection/array_map-in-namespace.after.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace MyAwesomeName\Good;
+
+$a = [1, 2, 3, 4, 5];
+$b = collect($a)->map(function ($n) {
+    return ($n * $n * $n);
+})->all();
diff --git a/src/test/resources/inspections/ArrayMapToCollectionInspection/array_map-in-namespace.php b/src/test/resources/inspections/ArrayMapToCollectionInspection/array_map-in-namespace.php
new file mode 100644
index 0000000..7e51e18
--- /dev/null
+++ b/src/test/resources/inspections/ArrayMapToCollectionInspection/array_map-in-namespace.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace MyAwesomeName\Good;
+
+$a = [1, 2, 3, 4, 5];
+$b = <caret>array_map(function($n) {
+    return ($n * $n * $n);
+}, $a);
diff --git a/src/test/resources/inspections/ArrayMapToCollectionInspection/namespaced_array_map.after.php b/src/test/resources/inspections/ArrayMapToCollectionInspection/namespaced_array_map.after.php
new file mode 100644
index 0000000..9f58183
--- /dev/null
+++ b/src/test/resources/inspections/ArrayMapToCollectionInspection/namespaced_array_map.after.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace MyAwesomeName\Good;
+
+$a = [1, 2, 3, 4, 5];
+$b = <caret>\array_map(function($n) {
+    return ($n * $n * $n);
+}, $a);
diff --git a/src/test/resources/inspections/ArrayMapToCollectionInspection/namespaced_array_map.php b/src/test/resources/inspections/ArrayMapToCollectionInspection/namespaced_array_map.php
new file mode 100644
index 0000000..4b98ac5
--- /dev/null
+++ b/src/test/resources/inspections/ArrayMapToCollectionInspection/namespaced_array_map.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace MyAwesomeName\Good;
+
+$a = [1, 2, 3, 4, 5];
+$b = collect($a)->map(function ($n) {
+    return ($n * $n * $n);
+})->all();