Removed ansi flag
diff --git a/gtp/Makefile.in b/gtp/Makefile.in
index a15b2b8..489c75f 100644
--- a/gtp/Makefile.in
+++ b/gtp/Makefile.in
@@ -90,7 +90,7 @@
 
 include_HEADERS = gtp.h pdp.h
 
-CFLAGS = -O2 -fno-builtin -Wall -ansi -DSBINDIR='"$(sbindir)"' -ggdb
+CFLAGS = -O2 -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' -ggdb
 
 libgtp_la_SOURCES = gtp.c gtp.h gtpie.c gtpie.h pdp.c pdp.h lookupa.c lookupa.h queue.c queue.h
 subdir = gtp