diff --git a/examples/schnorr.c b/examples/schnorr.c
index 326e830169..6f34f599ab 100644
--- a/examples/schnorr.c
+++ b/examples/schnorr.c
@@ -52,7 +52,7 @@ int main(void) {
     }
     /* Try to create a keypair with a valid context, it should only fail if
      * the secret key is zero or out of range. */
-    if (secp256k1_keypair_create(ctx, &keypair, seckey)) {
+    if (!secp256k1_keypair_create(ctx, &keypair, seckey)) {
         printf("Generated secret key is invalid. This indicates an issue with the random number generator.\n");
 	return 1;
     }