diff --git a/bfg.c b/bfg.c
index 46be0ca..5f1f163 100644
--- a/bfg.c
+++ b/bfg.c
@@ -150,7 +150,7 @@ int bf_init(char *arg) {
   bf_options.current = bf_options.from;
   memset((char *) bf_options.state, 0, sizeof(bf_options.state));
   if (debug)
-    printf("[DEBUG] bfg INIT: from %d, to %d, len: %d, set: %s\n", bf_options.from, bf_options.to, bf_options.crs_len, bf_options.crs);
+    printf("[DEBUG] bfg INIT: from %u, to %u, len: %u, set: %s\n", bf_options.from, bf_options.to, bf_options.crs_len, bf_options.crs);
 
   return 0;
 }
@@ -189,9 +189,9 @@ char *bf_next() {
   bf_options.ptr[bf_options.current] = 0;
 
   if (debug) {
-    printf("[DEBUG] bfg IN: len %d, from %d, current %d, to %d, state:", bf_options.crs_len, bf_options.from, bf_options.current, bf_options.to);
+    printf("[DEBUG] bfg IN: len %u, from %u, current %u, to %u, state:", bf_options.crs_len, bf_options.from, bf_options.current, bf_options.to);
     for (i = 0; i < bf_options.current; i++)
-      printf(" %d", bf_options.state[i]);
+      printf(" %u", bf_options.state[i]);
     printf(", x: %s\n", bf_options.ptr);
   }
 
diff --git a/hydra-http.c b/hydra-http.c
index 2d15477..715e99e 100644
--- a/hydra-http.c
+++ b/hydra-http.c
@@ -201,7 +201,7 @@ int start_http(int s, char *ip, int port, unsigned char options, char *miscptr,
     }
   } else {
     if (ptr != NULL && *ptr != '4')
-      fprintf(stderr, "[WARNING] Unusual return code: %.3s for %s:%s\n", (char) *ptr, login, pass);
+      fprintf(stderr, "[WARNING] Unusual return code: %.3s for %s:%s\n", (char *) ptr, login, pass);
 
     //the first authentication type failed, check the type from server header
     if ((hydra_strcasestr(http_buf, "WWW-Authenticate: Basic") == NULL) && (http_auth_mechanism == AUTH_BASIC)) {
diff --git a/hydra.c b/hydra.c
index 5f05010..33c15e0 100644
--- a/hydra.c
+++ b/hydra.c
@@ -1761,7 +1761,7 @@ int hydra_send_next_pair(int target_no, int head_no) {
 
   if (loop_cnt > (hydra_brains.countlogin * 2) + 1 && loop_cnt > (hydra_brains.countpass * 2) + 1) {
     if (debug)
-      printf("[DEBUG] too many loops in send_next_pair, returning -1 (loop_cnt %d, sent %ld, todo %ld)\n", loop_cnt, hydra_targets[target_no]->sent, hydra_brains.todo);
+      printf("[DEBUG] too many loops in send_next_pair, returning -1 (loop_cnt %d, sent %lu, todo %lu)\n", loop_cnt, hydra_targets[target_no]->sent, hydra_brains.todo);
     return -1;
   }
 
@@ -2534,7 +2534,7 @@ int main(int argc, char *argv[]) {
         }
         //printf("target: %s  service: %s  port: %s  opt: %s\n", target_pos, hydra_options.service, port_pos, param_pos);
         if (debug)
-          printf("[DEBUG] opt:%d argc:%d mod:%s tgt:%s port:%d misc:%s\n", optind, argc, hydra_options.service, hydra_options.server, hydra_options.port, hydra_options.miscptr);
+          printf("[DEBUG] opt:%d argc:%d mod:%s tgt:%s port:%u misc:%s\n", optind, argc, hydra_options.service, hydra_options.server, hydra_options.port, hydra_options.miscptr);
       } else {
         hydra_options.server = NULL;
         hydra_options.service = NULL;
diff --git a/ntlm.c b/ntlm.c
index e98b859..865dccf 100644
--- a/ntlm.c
+++ b/ntlm.c
@@ -1307,7 +1307,7 @@ void dumpAuthResponse(FILE * fp, tSmbNtlmAuthResponse * response);
 void dumpAuthRequest(FILE * fp, tSmbNtlmAuthRequest * request) {
   fprintf(fp, "NTLM Request:\n");
   fprintf(fp, "      Ident = %s\n", request->ident);
-  fprintf(fp, "      mType = %d\n", IVAL(&request->msgType, 0));
+  fprintf(fp, "      mType = %u\n", IVAL(&request->msgType, 0));
   fprintf(fp, "      Flags = %08x\n", IVAL(&request->flags, 0));
   fprintf(fp, "       Host = %s\n", GetString(request, host));
   fprintf(fp, "     Domain = %s\n", GetString(request, domain));
@@ -1316,7 +1316,7 @@ void dumpAuthRequest(FILE * fp, tSmbNtlmAuthRequest * request) {
 void dumpAuthChallenge(FILE * fp, tSmbNtlmAuthChallenge * challenge) {
   fprintf(fp, "NTLM Challenge:\n");
   fprintf(fp, "      Ident = %s\n", challenge->ident);
-  fprintf(fp, "      mType = %d\n", IVAL(&challenge->msgType, 0));
+  fprintf(fp, "      mType = %u\n", IVAL(&challenge->msgType, 0));
   fprintf(fp, "     Domain = %s\n", GetUnicodeString(challenge, uDomain));
   fprintf(fp, "      Flags = %08x\n", IVAL(&challenge->flags, 0));
   fprintf(fp, "  Challenge = ");
@@ -1327,7 +1327,7 @@ void dumpAuthChallenge(FILE * fp, tSmbNtlmAuthChallenge * challenge) {
 void dumpAuthResponse(FILE * fp, tSmbNtlmAuthResponse * response) {
   fprintf(fp, "NTLM Response:\n");
   fprintf(fp, "      Ident = %s\n", response->ident);
-  fprintf(fp, "      mType = %d\n", IVAL(&response->msgType, 0));
+  fprintf(fp, "      mType = %u\n", IVAL(&response->msgType, 0));
   fprintf(fp, "     LmResp = ");
   DumpBuffer(fp, response, lmResponse);
   fprintf(fp, "     NTResp = ");