diff --git a/test/Variable/makefile_patch.sh b/test/Variable/makefile_patch.sh
index 8b6911a4c1f751dfa7ee7d2dcd90e6edcd0f6e3e..c6baf4de69ce81239bd4f2c7dbcd289520f4194a 100755
--- a/test/Variable/makefile_patch.sh
+++ b/test/Variable/makefile_patch.sh
@@ -18,7 +18,7 @@ s/SOLARIS8_LIBS = -lsocket -lnsl -lxml2/SOLARIS8_LIBS = -lsocket -lnsl -lxml2 -l
 
 s/OPENSSL_DIR = $(TTCN3_DIR)/OPENSSL_DIR = \/mnt\/projects\/TTCN\/Tools\/openssl-0.9.8e/g
 
-s/LINUX_LIBS =/LINUX_LIBS = -lpcap -lutil/g
+s/LINUX_LIBS =/LINUX_LIBS = -lpcap -lutil -lpthread/g
 s/SOLARIS_LIBS =/SOLARIS_LIBS = -lnsl -lxml2 -lresolv -lpcap/g
 ' <$1 | "$comm_base_dir/../Variable/makefile_patch_compiler_flags.sh" >$2