diff --git a/src/udev/mtd_probe/probe_smartmedia.c b/src/udev/mtd_probe/probe_smartmedia.c
index 8980ebfb298..5d58de6a871 100644
--- a/src/udev/mtd_probe/probe_smartmedia.c
+++ b/src/udev/mtd_probe/probe_smartmedia.c
@@ -28,6 +28,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include "alloc-util.h"
 #include "mtd_probe.h"
 
 static const uint8_t cis_signature[] = {
@@ -35,16 +36,16 @@ static const uint8_t cis_signature[] = {
 };
 
 
-void probe_smart_media(int mtd_fd, mtd_info_t* info)
-{
+void probe_smart_media(int mtd_fd, mtd_info_t* info) {
         int sector_size;
         int block_size;
         int size_in_megs;
         int spare_count;
-        char* cis_buffer = malloc(SM_SECTOR_SIZE);
+        _cleanup_free_ uint8_t *cis_buffer = NULL;
         int offset;
         int cis_found = 0;
 
+        cis_buffer = malloc(SM_SECTOR_SIZE);
         if (!cis_buffer)
                 return;
 
@@ -89,9 +90,8 @@ void probe_smart_media(int mtd_fd, mtd_info_t* info)
                 goto exit;
 
         printf("MTD_FTL=smartmedia\n");
-        free(cis_buffer);
         exit(EXIT_SUCCESS);
+
 exit:
-        free(cis_buffer);
         return;
 }