diff --git a/sysinfo/regen_makefile.sh b/sysinfo/regen_makefile.sh
index 9dd3b7f..4a3dfcc 100755
--- a/sysinfo/regen_makefile.sh
+++ b/sysinfo/regen_makefile.sh
@@ -1,5 +1,16 @@
 #!/bin/sh
 
-FILES="*.ttcn IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc IPL4_GSMTAP_CtrlFunctDef.cc TELNETasp_PT.cc"
+FILES="
+	*.ttcn
+	IPL4_GSMTAP_CtrlFunctDef.cc
+	IPL4asp_PT.cc
+	IPL4asp_discovery.cc
+	TCCConversion.cc
+	TCCInterface.cc
+	TELNETasp_PT.cc
+"
+
+export CPPFLAGS_TTCN3="
+"
 
 ../regen-makefile.sh Test.ttcn $FILES