diff --git a/src/server/slavefuncs.c b/src/server/slavefuncs.c
--- a/src/server/slavefuncs.c
+++ b/src/server/slavefuncs.c
@@ -33,6 +33,36 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
+/** Converts an integer to a string, thanks to Dom_ (http://www.signalsondisplay.com/) */
+char *int_to_str(int nbr)
+{
+  int   div;
+  int   len;
+  int   i;
+  char  *res;
+
+  res = malloc(4 * sizeof(*res)); // Was xmalloc, hopefully it still works :D
+  i = 0;
+  while (i < 3)
+    res[i++] = '\0';
+  res[3] = '\0';
+  i = 0;
+  div = 1;
+  len = 1;
+  while (nbr / div >= 10)
+    {
+      div *= 10;
+      len++;
+    }
+  while (len)
+    {
+      res[i++] = '0' + (nbr / div);
+      len--;
+      nbr %= div;
+      div /= 10;
+    }
+  return (res);
+}
 /** Generates a SSH key with ssh-keygen */
 int ssh_keygen(){
 	// distren.id_rsa and distren.id_rsa.pub are now generated in SYSCONFDIR (etc)
@@ -253,8 +283,8 @@ return 1;
 /** Executor function for Blender operations */
 void exec_blender(struct blendjob* blendjob, char *input, char *output, int frame)
 {
-  char *frame_str;
-  asprintf(frame,frame_str); // Converts the int frame to a string, so it can be in the cmd array. GNU/*nix compatible only, fix before releasing win32, although dll for windows for asprintf exists!
+
+	char *frame_str = int_to_str(frame); // Converts the int frame to a string, so it can be in the cmd array. GNU/*nix compatible only, fix before releasing win32, although dll for windows for asprintf exists!
 
   /* start execio code */
   	char *command = "blender"; // @TODO: append .exe if win32?