diff --git a/src/compiler/glsl/tests/cache_test.c b/src/compiler/glsl/tests/cache_test.c
index 9d7bde2834c..cf654e5b01d 100644
--- a/src/compiler/glsl/tests/cache_test.c
+++ b/src/compiler/glsl/tests/cache_test.c
@@ -230,7 +230,13 @@ test_disk_cache_create(void)
    expect_null(cache_exists(cache), "disk_cache_create with XDG_CACHE_HOME set "
                "with a non-existing parent directory");
 
-   mkdir(CACHE_TEST_TMP, 0755);
+   err = mkdir(CACHE_TEST_TMP, 0755);
+   if (err != 0) {
+      fprintf(stderr, "Error creating %s: %s\n", CACHE_TEST_TMP, strerror(errno));
+      error = true;
+      return;
+   }
+
    cache = disk_cache_create("test", "make_check", 0);
    expect_non_null(cache_exists(cache), "disk_cache_create with XDG_CACHE_HOME "
                    "set");
@@ -249,7 +255,13 @@ test_disk_cache_create(void)
    expect_null(cache_exists(cache), "disk_cache_create with MESA_GLSL_CACHE_DIR"
                " set with a non-existing parent directory");
 
-   mkdir(CACHE_TEST_TMP, 0755);
+   err = mkdir(CACHE_TEST_TMP, 0755);
+   if (err != 0) {
+      fprintf(stderr, "Error creating %s: %s\n", CACHE_TEST_TMP, strerror(errno));
+      error = true;
+      return;
+   }
+
    cache = disk_cache_create("test", "make_check", 0);
    expect_non_null(cache_exists(cache), "disk_cache_create with "
                    "MESA_GLSL_CACHE_DIR set");