diff --git a/config/amd64/make_defs.mk b/config/amd64/make_defs.mk
index 668c7275e..70c0b692b 100644
--- a/config/amd64/make_defs.mk
+++ b/config/amd64/make_defs.mk
@@ -75,7 +75,7 @@ endif
 # Flags specific to reference kernels.
 CROPTFLAGS     := $(CKOPTFLAGS)
 ifeq ($(CC_VENDOR),gcc)
-CRVECFLAGS     := $(CKVECFLAGS) -funsafe-loop-optimizations
+CRVECFLAGS     := $(CKVECFLAGS)
 else
 CRVECFLAGS     := $(CKVECFLAGS)
 endif
diff --git a/config/intel64/make_defs.mk b/config/intel64/make_defs.mk
index 3a9cb8895..af462fdc3 100644
--- a/config/intel64/make_defs.mk
+++ b/config/intel64/make_defs.mk
@@ -79,7 +79,7 @@ endif
 # Flags specific to reference kernels.
 CROPTFLAGS     := $(CKOPTFLAGS)
 ifeq ($(CC_VENDOR),gcc)
-CRVECFLAGS     := $(CKVECFLAGS) -funsafe-loop-optimizations
+CRVECFLAGS     := $(CKVECFLAGS)
 else
 CRVECFLAGS     := $(CKVECFLAGS)
 endif
diff --git a/config/x86_64/make_defs.mk b/config/x86_64/make_defs.mk
index 0c6c521bd..4d038ff04 100644
--- a/config/x86_64/make_defs.mk
+++ b/config/x86_64/make_defs.mk
@@ -79,7 +79,7 @@ endif
 # Flags specific to reference kernels.
 CROPTFLAGS     := $(CKOPTFLAGS)
 ifeq ($(CC_VENDOR),gcc)
-CRVECFLAGS     := $(CKVECFLAGS) -funsafe-loop-optimizations
+CRVECFLAGS     := $(CKVECFLAGS)
 else
 CRVECFLAGS     := $(CKVECFLAGS)
 endif