diff --git a/src/parser/seclang-parser.yy b/src/parser/seclang-parser.yy
index f5074b68..2e659b2e 100644
--- a/src/parser/seclang-parser.yy
+++ b/src/parser/seclang-parser.yy
@@ -225,6 +225,7 @@ using ModSecurity::Variables::Variable;
 input:
     %empty
     | input line
+    | SPACE
     ;
 
 line: expression