diff --git a/Makefile.am b/Makefile.am
index 0dd498e..f6d4bb0 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,7 +4,7 @@
 WARN_CLANG=-Wformat-nonliteral -Wstrncat-size -Wformat-security -Wsign-conversion -Wconversion -Wfloat-conversion -Wshorten-64-to-32 -Wuninitialized -Wmissing-variable-declarations  -Wmissing-declarations
 WARN_GCC=-Wformat=2 -Wformat-overflow=2 -Wformat-nonliteral -Wformat-truncation=2 -Wnull-dereference -Wstrict-overflow=2 -Wstringop-overflow=4 -Walloca-larger-than=4096 -Wtype-limits -Wconversion -Wtrampolines -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -fno-common -Wcast-align
 CFLAGS ?= -g
-OPTS=-I. -O3 $(CFLAGS) -fcommon
+OPTS=-I. -O3 $(CFLAGS) -fcommon -Wno-deprecated-declarations
 CPPFLAGS += -D_GNU_SOURCE
 # -Wall -g -pedantic
 LIBS=-lm
diff --git a/hydra-http-form.c b/hydra-http-form.c
index 9e3c92b..a8e5922 100644
--- a/hydra-http-form.c
+++ b/hydra-http-form.c
@@ -322,8 +322,7 @@ void hdrrep(ptr_header_node *ptr_head, char *oldvalue, char *newvalue) {
         char *p = strstr(cur_ptr->value, oldvalue);
         memmove(p + newlen, p + oldlen, strlen(p + oldlen) + 1);
         memcpy(p, newvalue, newlen);
-      }
-      else {
+      } else {
         hydra_report(stderr, "[ERROR] Out of memory (hddrep).\n");
         hydra_child_exit(0);
       }
@@ -805,7 +804,7 @@ int32_t start_http_form(int32_t s, char *ip, int32_t port, unsigned char options
       if (hydra_send(s, http_request, strlen(http_request), 0) < 0) {
         free(cookie_header);
         return 1;
-      } 
+      }
     } else {
       if (header_exists(&ptr_head, "Content-Length", HEADER_TYPE_DEFAULT))
         hdrrepv(&ptr_head, "Content-Length", "0");
diff --git a/hydra-mod.c b/hydra-mod.c
index de86f66..c988c1d 100644
--- a/hydra-mod.c
+++ b/hydra-mod.c
@@ -664,7 +664,7 @@ char *hydra_get_next_pair() {
     // if (debug) hydra_dump_data(pair, __fck, "CHILD READ PAIR");
     if (pair[0] == 0 || __fck <= 0)
       return HYDRA_EMPTY;
-    if (__fck >=  sizeof(HYDRA_EXIT) && memcmp(&HYDRA_EXIT, &pair, sizeof(HYDRA_EXIT)) == 0)
+    if (__fck >= sizeof(HYDRA_EXIT) && memcmp(&HYDRA_EXIT, &pair, sizeof(HYDRA_EXIT)) == 0)
       return HYDRA_EXIT;
   }
   return pair;
diff --git a/hydra-smb2.c b/hydra-smb2.c
index 5e99451..9f396be 100644
--- a/hydra-smb2.c
+++ b/hydra-smb2.c
@@ -126,7 +126,7 @@ bool smb2_run_test(creds_t *cr, const char *server, uint16_t port) {
 
   */
   switch (errno) {
-  case 0: 
+  case 0:
     // maybe false positive? unclear ... :( ... needs more testing
     smbc_free_context(ctx, 1);
     return true;
diff --git a/hydra-svn.c b/hydra-svn.c
index 063f12c..0258f9a 100644
--- a/hydra-svn.c
+++ b/hydra-svn.c
@@ -4,7 +4,9 @@
 #ifdef LIBSVN
 
 /* needed on openSUSE */
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 
 #if !defined PATH_MAX && defined HAVE_SYS_PARAM_H
 #include <sys/param.h>