diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 5526dd85..822a2415 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1299,8 +1299,8 @@ Unified Parallel C:
   lexer: C
   ace_mode: c_cpp
   color: "#755223"
-  primary_extension: .upc 
-  
+  primary_extension: .upc
+
 VHDL:
   type: programming
   lexer: vhdl
@@ -1350,8 +1350,6 @@ XC:
   type: programming
   lexer: C
   primary_extension: .xc
-  extensions:
-  - .xc
 
 XML:
   type: markup