diff --git a/lib/libc/quad/qdivrem.c b/lib/libc/quad/qdivrem.c
index ea09e7f43f16..7dd7632d39ed 100644
--- a/lib/libc/quad/qdivrem.c
+++ b/lib/libc/quad/qdivrem.c
@@ -94,7 +94,7 @@ __qdivrem(u_quad_t uq, u_quad_t vq, u_quad_t *arq)
 	/*
 	 * Take care of special cases: divide by zero, and u < v.
 	 */
-	if (vq == 0) {
+	if (__predict_false(vq == 0)) {
 		/* divide by zero. */
 		static volatile const unsigned int zero = 0;
 
diff --git a/sys/libkern/qdivrem.c b/sys/libkern/qdivrem.c
index 2429fe708d7b..3f2834166450 100644
--- a/sys/libkern/qdivrem.c
+++ b/sys/libkern/qdivrem.c
@@ -91,7 +91,7 @@ __qdivrem(u_quad_t uq, u_quad_t vq, u_quad_t *arq)
 	/*
 	 * Take care of special cases: divide by zero, and u < v.
 	 */
-	if (vq == 0) {
+	if (__predict_false(vq == 0)) {
 		/* divide by zero. */
 		static volatile const unsigned int zero = 0;