diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 76812a2d..9af0201a 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -391,15 +391,15 @@ void kmstest_force_edid(int drm_fd, drmModeConnector *connector,
 	igt_assert(ret != -1);
 }
 
-int kmstest_get_connector_default_mode(int drm_fd, drmModeConnector *connector,
-				      drmModeModeInfo *mode)
+bool kmstest_get_connector_default_mode(int drm_fd, drmModeConnector *connector,
+					drmModeModeInfo *mode)
 {
 	int i;
 
 	if (!connector->count_modes) {
 		fprintf(stderr, "no modes for connector %d\n",
 			connector->connector_id);
-		return -1;
+		return false;
 	}
 
 	for (i = 0; i < connector->count_modes; i++) {
@@ -411,7 +411,7 @@ int kmstest_get_connector_default_mode(int drm_fd, drmModeConnector *connector,
 		}
 	}
 
-	return 0;
+	return true;
 }
 
 int kmstest_get_connector_config(int drm_fd, uint32_t connector_id,
@@ -480,8 +480,8 @@ int kmstest_get_connector_config(int drm_fd, uint32_t connector_id,
 	goto err3;
 
 found:
-	if (kmstest_get_connector_default_mode(drm_fd, connector,
-				       &config->default_mode) < 0)
+	if (!kmstest_get_connector_default_mode(drm_fd, connector,
+						&config->default_mode))
 		goto err4;
 
 	config->connector = connector;
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 0acfeba1..01bbf5f5 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -152,8 +152,8 @@ bool kmstest_force_connector(int fd, drmModeConnector *connector,
 void kmstest_force_edid(int drm_fd, drmModeConnector *connector,
 			const unsigned char *edid, size_t length);
 
-int kmstest_get_connector_default_mode(int drm_fd, drmModeConnector *connector,
-				      drmModeModeInfo *mode);
+bool kmstest_get_connector_default_mode(int drm_fd, drmModeConnector *connector,
+					drmModeModeInfo *mode);
 int kmstest_get_connector_config(int drm_fd, uint32_t connector_id,
 				 unsigned long crtc_idx_mask,
 				 struct kmstest_connector_config *config);
diff --git a/tests/kms_setmode.c b/tests/kms_setmode.c
index f4197854..59e2434c 100644
--- a/tests/kms_setmode.c
+++ b/tests/kms_setmode.c
@@ -517,8 +517,8 @@ static int get_one_connector(drmModeRes *resources, int connector_id,
 	}
 
 	if (cconf->connected) {
-		if (kmstest_get_connector_default_mode(drm_fd, connector,
-							&mode) < 0)
+		if (!kmstest_get_connector_default_mode(drm_fd, connector,
+							&mode))
 			mode = mode_640_480;
 	} else {
 		mode = mode_640_480;