src/misc.c |    2 +-

 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/misc.c b/src/misc.c

index 93edfe5..129bfd3 100644

--- a/src/misc.c

+++ b/src/misc.c

@@ -1103,7 +1103,7 @@ SendHelperMessage(WScreen *scr, char type, int workspace, char *msg)

     len = (msg ? strlen(msg) : 0) + (workspace >=0 ? 4 : 0) + 1 ;

     buffer = wmalloc(len+5);

-    snprintf(buf, len, "%4i", len);

+    snprintf(buf, sizeof(buf), "%4i", len);

     memcpy(buffer, buf, 4);

     buffer[4] = type;

     i = 5;