diff --git a/ext/gd/gd.c b/ext/gd/gd.c
index 609a61ebc243c..5e331f2aa971e 100644
--- a/ext/gd/gd.c
+++ b/ext/gd/gd.c
@@ -2673,6 +2673,8 @@ static void php_imagepolygon(INTERNAL_FUNCTION_PARAMETERS, int filled)
 			RETURN_THROWS();
 		}
 		NPOINTS /= 2;
+	} else {
+		php_error_docref(NULL, E_DEPRECATED, "Using the $num_points parameter is deprecated");
 	}
 
 	im = php_gd_libgdimageptr_from_zval_p(IM);
diff --git a/ext/gd/tests/bug55005.phpt b/ext/gd/tests/bug55005.phpt
index 4514b80fed3b5..0bcdb73c995ac 100644
--- a/ext/gd/tests/bug55005.phpt
+++ b/ext/gd/tests/bug55005.phpt
@@ -16,6 +16,9 @@ trycatch_dump(
     fn () => imagepolygon($g, array(200,10, 200,100, 280,100), 2, $fgnd)
 );
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: imagefilledpolygon(): Using the $num_points parameter is deprecated in %s on line %d
 !! [ValueError] imagefilledpolygon(): Argument #3 ($num_points_or_color) must be greater than or equal to 3
+
+Deprecated: imagepolygon(): Using the $num_points parameter is deprecated in %s on line %d
 !! [ValueError] imagepolygon(): Argument #3 ($num_points_or_color) must be greater than or equal to 3