diff --git a/admin/dump.c b/admin/dump.c
index 58c41a84e..d2d80f915 100644
--- a/admin/dump.c
+++ b/admin/dump.c
@@ -20,7 +20,7 @@ key2str(krb5_keyblock *key)
     int i;
     if(s)
 	free(s);
-    s = malloc(key->keyvalue.length/2+10);
+    s = malloc(key->keyvalue.length*2+10);
     sprintf(s, "%d:", key->keytype);
     p = (unsigned char*)key->keyvalue.data;
     for(i = 0; i < key->keyvalue.length; i++)
diff --git a/kadmin/dump.c b/kadmin/dump.c
index 58c41a84e..d2d80f915 100644
--- a/kadmin/dump.c
+++ b/kadmin/dump.c
@@ -20,7 +20,7 @@ key2str(krb5_keyblock *key)
     int i;
     if(s)
 	free(s);
-    s = malloc(key->keyvalue.length/2+10);
+    s = malloc(key->keyvalue.length*2+10);
     sprintf(s, "%d:", key->keytype);
     p = (unsigned char*)key->keyvalue.data;
     for(i = 0; i < key->keyvalue.length; i++)