diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index c9f6ddad..2db0e3b4 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -882,6 +882,8 @@ OpenCL:
   group: C
   lexer: C
   primary_extension: .cl
+  extensions:
+  - .opencl
 
 OpenEdge ABL:
   type: programming