diff --git a/tests/Makefile.fpc b/tests/Makefile.fpc
index 2fbc2d30aa..d0b53e0d36 100644
--- a/tests/Makefile.fpc
+++ b/tests/Makefile.fpc
@@ -194,7 +194,7 @@ clean:
         -rm -f $(addsuffix /*$(SHAREDLIBEXT),$(DIRS))
         -rm -f $(addsuffix /*.log,$(DIRS))
         -rm -f $(addsuffix /*.elg,$(DIRS))
-ifdef INUNIX
+ifeq ($(EXEEXT),)
         -rm -f $(wildcard $(patsubst %.pp,%$(EXEEXT),$(wildcard $(addsuffix /t*.pp,$(DIRS)))))
 else
         -rm -f $(addsuffix /*$(EXEEXT),$(DIRS))