diff --git a/org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/parser/IMarkdownCommentHelper.java b/org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/parser/IMarkdownCommentHelper.java
index 7f57de3f8e7..5ee6b613b04 100644
--- a/org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/parser/IMarkdownCommentHelper.java
+++ b/org.eclipse.jdt.core.compiler.batch/src/org/eclipse/jdt/internal/compiler/parser/IMarkdownCommentHelper.java
@@ -138,8 +138,8 @@ public void recordFenceChar(char previous, char next, boolean lineStarted) {
 		int required = this.insideFencedCodeBlock ? this.fenceLength : 3;
 		if (++this.fenceCharCount == required) {
 			this.insideFencedCodeBlock^=true;
+			this.fenceLength = this.fenceCharCount;
 		}
-		this.fenceLength = this.fenceCharCount;
 	}
 
 	@Override