1 files changed, 5 insertions, 1 deletions
diff --git a/components/script/dom/webglprogram.rs b/components/script/dom/webglprogram.rs
index 28cac1ed11b..6cc122cf459 100644
--- a/components/script/dom/webglprogram.rs
+++ b/components/script/dom/webglprogram.rs
@@ -157,7 +157,7 @@ impl WebGLProgram {
         }
 
         // Check if the name is reserved
-        if name.starts_with("webgl") || name.starts_with("_webgl_") {
+        if name.starts_with("gl_") || name.starts_with("webgl") || name.starts_with("_webgl_") {
             return Err(WebGLError::InvalidOperation);
         }
 
@@ -195,6 +195,10 @@ impl WebGLProgram {
         }
 
         // Check if the name is reserved
+        if name.starts_with("gl_") {
+            return Err(WebGLError::InvalidOperation);
+        }
+
         if name.starts_with("webgl") || name.starts_with("_webgl_") {
             return Ok(None);
         }