1 files changed, 1 insertions, 1 deletions
diff --git a/read.c b/read.c
index 1fe229b..fe33ab2 100644
--- a/read.c
+++ b/read.c
@@ -1123,7 +1123,7 @@ eval (struct ebuffer *ebuf, int set_default)
 
             /* There's no need to be ivory-tower about this: check for
                one of the most common bugs found in makefiles...  */
-            if (cmd_prefix == '\t' && !strneq (line, "        ", 8))
+            if (cmd_prefix == '\t' && strneq (line, "        ", 8))
               O (fatal, fstart, _("missing separator (did you mean TAB instead of 8 spaces?)"));
             else
               O (fatal, fstart, _("missing separator"));