diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5ccd8d62..ca4765f0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,7 +18,7 @@ jobs:
         php: [ 8.3 ]
         imagemagick: [
 #            7.1.0-13,
-            6.8.7-0,
+             6.7.8-0,
         ]
     runs-on: ${{ matrix.os }}
 
diff --git a/tests/014-setresourcelimit.phpt b/tests/014-setresourcelimit.phpt
index a2adfe5f..2d9eb14d 100644
--- a/tests/014-setresourcelimit.phpt
+++ b/tests/014-setresourcelimit.phpt
@@ -46,10 +46,10 @@ if (defined('Imagick::RESOURCETYPE_THREAD')) {
 	$tests[Imagick::RESOURCETYPE_THREAD] = 1; 
 }
 if (defined('Imagick::RESOURCETYPE_WIDTH')) {
-	$tests[Imagick::RESOURCETYPE_WIDTH] = $g; 
+	$tests[Imagick::RESOURCETYPE_WIDTH] = 15 * $k;
 }
 if (defined('Imagick::RESOURCETYPE_HEIGHT')) {
-	$tests[Imagick::RESOURCETYPE_HEIGHT] = $g; 
+	$tests[Imagick::RESOURCETYPE_HEIGHT] = 15 * $k;
 }
 
 $reflection_class = new ReflectionClass(Imagick::class);