diff --git a/selftest/regen_makefile.sh b/selftest/regen_makefile.sh
index 9d302ac..bd2ae91 100755
--- a/selftest/regen_makefile.sh
+++ b/selftest/regen_makefile.sh
@@ -2,8 +2,20 @@
 
 MAIN=Selftest.ttcn
 
-FILES="*.ttcn *.ttcnpp IPA_CodecPort_CtrlFunctDef.cc IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc"
+FILES="
+	*.ttcn
+	*.ttcnpp
+	IPA_CodecPort_CtrlFunctDef.cc
+	IPL4asp_PT.cc
+	IPL4asp_discovery.cc
+	TCCConversion.cc
+	TCCInterface.cc
+"
 
-export CPPFLAGS_TTCN3="-DIPA_EMULATION_RSL -DIPA_EMULATION_CTRL -DUSE_MTP3_DISTRIBUTOR"
+export CPPFLAGS_TTCN3="
+	-DIPA_EMULATION_CTRL
+	-DIPA_EMULATION_RSL
+	-DUSE_MTP3_DISTRIBUTOR
+"
 
 ../regen-makefile.sh $MAIN $FILES