diff --git a/README.md b/README.md
index fe4d119d..c5880380 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ or higher should be able to compile without problems. However, the officially su
 - Visual Studio 2015 Community (Visual C++ 14.0)+
 
 Please make sure you use the `-std=c++1y`, `-std=c++14`, `-std=c++1z`, `-std=c++17` or better standard flags 
-(some of these flags are the defaults in later versions of GCC 6+ and better).
+(some of these flags are the defaults in later versions of GCC, such as 6+ and better).
 
 Older compilers (GCC 4.9.x, Clang 3.4.x seem to be the lowest) can work with versions as late 
 as [v2.17.5](https://github.com/ThePhD/sol2/releases/tag/v2.17.5), with the flag `-std=c++14` or `-std=c++1y`.
diff --git a/single/sol/sol.hpp b/single/sol/sol.hpp
index 7f58fb47..5c5d7ded 100644
--- a/single/sol/sol.hpp
+++ b/single/sol/sol.hpp
@@ -20,8 +20,8 @@
 // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 // This file was generated with a script.
-// Generated 2017-12-08 03:12:27.695525 UTC
-// This header was generated with sol v2.19.0 (revision 399300f)
+// Generated 2017-12-08 03:30:27.683226 UTC
+// This header was generated with sol v2.19.0 (revision a2e0217)
 // https://github.com/ThePhD/sol2
 
 #ifndef SOL_SINGLE_INCLUDE_HPP
@@ -115,7 +115,7 @@
 
 #ifndef SOL_IN_DEBUG_DETECTED
 #define SOL_IN_DEBUG_DETECTED 1
-#endif SOL_IN_DEBUG_DETECTED
+#endif
 
 #endif // Not Debug && g++ optimizer flag
 
diff --git a/sol/feature_test.hpp b/sol/feature_test.hpp
index cf066040..0a0f8d52 100644
--- a/sol/feature_test.hpp
+++ b/sol/feature_test.hpp
@@ -75,7 +75,7 @@
 
 #ifndef SOL_IN_DEBUG_DETECTED
 #define SOL_IN_DEBUG_DETECTED 1
-#endif SOL_IN_DEBUG_DETECTED
+#endif
 
 #endif // Not Debug && g++ optimizer flag