Fix Wundef warnings

[alexxy/gromacs.git] / src / gromacs / selection / scanner_flex.h

diff --git a/src/gromacs/selection/scanner_flex.h b/src/gromacs/selection/scanner_flex.h
index 939c685567c404238f2a9f59518b0480120976b1..abad91858e7dc5f935ff2528ff63dd32b2487038 100644 (file)
--- a/src/gromacs/selection/scanner_flex.h
+++ b/src/gromacs/selection/scanner_flex.h
@@ -4,7 +4,7 @@
 
 #line 6 "scanner_flex.h"
 #line 50 "scanner.l"
-#if !_gmx_sel_yyIN_HEADER
+#if !defined _gmx_sel_yyIN_HEADER
 #include "gmxpre.h"
 #endif