diff --git a/GNUmakefile b/GNUmakefile
index 2d2e8001..2695e650 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -152,6 +152,7 @@ test: cryptest.exe
 
 clean:
 	-$(RM) cryptest.exe libcryptopp.a libcryptopp.so $(LIBOBJS) $(TESTOBJS) cryptopp.dll libcryptopp.dll.a libcryptopp.import.a cryptest.import.exe dlltest.exe $(DLLOBJS) $(LIBIMPORTOBJS) $(TESTI MPORTOBJS) $(DLLTESTOBJS)
+	-$(RM) -r cryptest.exe.dSYM
 
 install:
 	$(MKDIR) -p $(PREFIX)/include/cryptopp $(PREFIX)/lib $(PREFIX)/bin