diff --git a/src/debug_helpers.c b/src/debug_helpers.c
index a461043..329fd64 100644
--- a/src/debug_helpers.c
+++ b/src/debug_helpers.c
@@ -4,12 +4,12 @@
  * Use like this:
  * log_write(0, LOG_MAIN, "DEBUG: %s", string2hex(var, var_len));
 */
-char * string2hex(unsigned char * input, size_t length) {
+char *string2hex(unsigned char *input, size_t length) {
     const int growth = 3;
-    char * outstring = store_get(growth*length+1);
-    memset(outstring, 0, 3*length+1);
-    for (int i =0; i<length; i++) {
-        sprintf(outstring+i*growth, "%02x ", input[i]);
+    char *outstring = store_get(growth * length + 1);
+    memset(outstring, 0, 3 * length + 1);
+    for (int i = 0; i < length; i++) {
+        sprintf(outstring + i * growth, "%02x ", input[i]);
     }
     return outstring;
 }