diff --git a/tests/c_test.c b/tests/c_test.c
index 9b975b9..31a4e0b 100644
--- a/tests/c_test.c
+++ b/tests/c_test.c
@@ -43,10 +43,10 @@ int main(int argc, char** argv) {
         return 1;
     }
 
-    printf("left_ptr images: %d\n", shapeData->len);
+    printf("left_ptr images: %ld\n", shapeData->len);
 
     for (size_t i = 0; i < shapeData->len; ++i) {
-        printf("left_ptr image size: %d\n", shapeData->images[i].len);
+        printf("left_ptr image size: %ld\n", shapeData->images[i].len);
     }
 
     hyprcursor_raw_shape_data_free(shapeData);
@@ -76,4 +76,4 @@ int main(int argc, char** argv) {
     }
 
     return 0;
-}
\ No newline at end of file
+}