diff --git a/fr/regen_makefile.sh b/fr/regen_makefile.sh
index d17f51c..9c473ef 100755
--- a/fr/regen_makefile.sh
+++ b/fr/regen_makefile.sh
@@ -1,9 +1,22 @@
 #!/bin/bash
 
-FILES="*.ttcn *.ttcnpp IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc Native_FunctionDefs.cc "
-FILES+="BSSGP_EncDec.cc LLC_EncDec.cc TELNETasp_PT.cc "
-FILES+="AF_PACKET_PT.cc AF_PACKET_PT.hh "
+FILES="
+	*.ttcn
+	*.ttcnpp
+	AF_PACKET_PT.cc
+	AF_PACKET_PT.hh
+	BSSGP_EncDec.cc
+	IPL4asp_PT.cc
+	IPL4asp_discovery.cc
+	LLC_EncDec.cc
+	Native_FunctionDefs.cc
+	TCCConversion.cc
+	TCCInterface.cc
+	TELNETasp_PT.cc
+"
 
-export CPPFLAGS_TTCN3="-DNS_EMULATION_FR"
+export CPPFLAGS_TTCN3="
+	-DNS_EMULATION_FR
+"
 
 ../regen-makefile.sh FR_Tests.ttcn $FILES