diff --git a/src/log.c b/src/log.c
index 1a75dec..54f84cf 100644
--- a/src/log.c
+++ b/src/log.c
@@ -634,6 +634,8 @@
     va_start(ap, format);
     log_vprintf(NULL, LY_LLDBG, 0, 0, NULL, NULL, dbg_format, ap);
     va_end(ap);
+
+    free(dbg_format);
 }
 
 #endif