diff --git a/configure/toolchain.c b/configure/toolchain.c
index af03f5246..0a5276045 100644
--- a/configure/toolchain.c
+++ b/configure/toolchain.c
@@ -64,7 +64,3 @@ COMMANDLINE_LIBRARY ?= EPICS
 #else
 COMMANDLINE_LIBRARY ?= $(strip $(if $(wildcard $(if $(GNU_DIR),$(GNU_DIR)/include/readline/readline.h)), READLINE, EPICS))
 #endif
-
-#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE>2
-OP_SYS_CPPFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
-#endif