diff --git a/src/oc/mswinprt.cpp b/src/oc/mswinprt.cpp
index 29dbdc9571..3dfa805a3c 100644
--- a/src/oc/mswinprt.cpp
+++ b/src/oc/mswinprt.cpp
@@ -142,8 +142,8 @@ void hoc_win_exec(void) {
         i = (int) chkarg(2, -1000, 1000);
     }
     i = WinExec(gargstr(1), i);
-    ret();
-    pushx((double) i);
+    hoc_ret();
+    hoc_pushx((double) i);
 }
 
 void hoc_winio_show(int b) {}
@@ -154,17 +154,17 @@ int getpid() {
 
 void hoc_Plt() {
     TRY_GUI_REDIRECT_DOUBLE("plt", NULL);
-    ret();
-    pushx(0.);
+    hoc_ret();
+    hoc_pushx(0.);
 }
 void hoc_Setcolor() {
     TRY_GUI_REDIRECT_DOUBLE("setcolor", NULL);
-    ret();
-    pushx(0.);
+    hoc_ret();
+    hoc_pushx(0.);
 }
 void hoc_Lw() {
-    ret();
-    pushx(0.);
+    hoc_ret();
+    hoc_pushx(0.);
 }
 
 #endif  // MINGW