diff --git a/src/GPU/fix_gpu.cpp b/src/GPU/fix_gpu.cpp
index 6d9d2af6e0..7a8098fd69 100644
--- a/src/GPU/fix_gpu.cpp
+++ b/src/GPU/fix_gpu.cpp
@@ -60,7 +60,7 @@ static const char cite_gpu_package[] =
   " year =    2012,\n"
   " volume =  183,\n"
   " pages =   {449--459}\n"
-  "}\n\n"
+  "}\n\n";
 
 /* ---------------------------------------------------------------------- */