diff --git a/configure b/configure
index 64c90bb6a2..22eeca22a5 100755
--- a/configure
+++ b/configure
@@ -3942,7 +3942,7 @@ set >> $logfile
 
 test -n "$valgrind" && toolchain="valgrind-memcheck"
 
-enabled ossfuzz && {
+enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  &&{
     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
 }