diff --git a/SCCP_Test/regen_makefile.sh b/SCCP_Test/regen_makefile.sh
index 9472e0c..f5d13b7 100755
--- a/SCCP_Test/regen_makefile.sh
+++ b/SCCP_Test/regen_makefile.sh
@@ -2,6 +2,12 @@
 
 MAIN=SCCP_Testcases.ttcn
 
-FILES="*.ttcn *.ttcnpp"
+FILES="
+	*.ttcn
+	*.ttcnpp
+"
+
+export CPPFLAGS_TTCN3="
+"
 
 ../regen-makefile.sh $MAIN $FILES