diff --git a/src/lib/eval/location.hh b/src/lib/eval/location.hh
index 8c57aa1b64..82d4891240 100644
--- a/src/lib/eval/location.hh
+++ b/src/lib/eval/location.hh
@@ -1,4 +1,4 @@
-// Generated at 20160219
+// Generated 20160219
 // A Bison parser, made by GNU Bison 3.0.4.
 
 // Locations for Bison parsers in C++
diff --git a/src/lib/eval/position.hh b/src/lib/eval/position.hh
index cb76426e7b..59f4b295f5 100644
--- a/src/lib/eval/position.hh
+++ b/src/lib/eval/position.hh
@@ -1,4 +1,4 @@
-// Generated at 20160219
+// Generated 20160219
 // A Bison parser, made by GNU Bison 3.0.4.
 
 // Positions for Bison parsers in C++
diff --git a/src/lib/eval/stack.hh b/src/lib/eval/stack.hh
index 2b3656900f..0ad2aa5370 100644
--- a/src/lib/eval/stack.hh
+++ b/src/lib/eval/stack.hh
@@ -1,4 +1,4 @@
-// Generated at 20160219
+// Generated 20160219
 // A Bison parser, made by GNU Bison 3.0.4.
 
 // Stack handling for Bison parsers in C++