--- digikam-4.13.0/core/libs/dimg/filters/lens/lensfuniface.h~	2015-09-03 23:22:45.000000000 +0200
+++ digikam-4.13.0/core/libs/dimg/filters/lens/lensfuniface.h	2015-12-18 00:01:24.805431724 +0100
@@ -24,10 +24,7 @@
 
 // Lib LensFun includes
 
-extern "C"
-{
 #include <lensfun.h>
-}
 
 // local includes