diff --git a/src/client.c b/src/client.c
index aa379f0..1c6ee0b 100644
--- a/src/client.c
+++ b/src/client.c
@@ -59,7 +59,6 @@ ret:
 Client* wm_client_create(Wm *wm, Window w)
 {
     DEBUG_PRINT("%s\n", __func__);
-    Client *t;
     XTextProperty xtp;
     int strln;
 
@@ -385,8 +384,6 @@ ret:
 
 Client* wm_client_get_focused(Wm *wm)
 {
-    Client *c = NULL;
-
     Workspace *ws = &wm->smon->workspaces[wm->smon->selws];
     TreeNode *node = wm_treenode_ptr_find_focused_client_node(ws->tree);
 
diff --git a/src/config.c b/src/config.c
index dc6d976..78bbdeb 100644
--- a/src/config.c
+++ b/src/config.c
@@ -121,7 +121,6 @@ void wm_configfile_init(ConfigFile *config, const char *filename)
     assert(filename);
 
     strncpy(config->file_path, filename, PATH_MAX);
-    const size_t size = CONFIG_ARGC_MAX*CONFIG_ARGLEN_MAX;
 
     ConfigCommand commands[] = {
         (ConfigCommand) {.string = "border_color", .arg_count = 1,
@@ -176,7 +175,6 @@ void wm_configfile_read(ConfigFile *cfile, Config *config)
 
     const int max_line_len = 8192;
     char line[max_line_len];
-    char argv[CONFIG_ARGC_MAX][CONFIG_ARGLEN_MAX];
     size_t line_index = 0;
     ConfigCommand command = {0};
     wm_configcommand_init(&command);
@@ -201,8 +199,6 @@ void wm_configfile_read(ConfigFile *cfile, Config *config)
 
 void wm_config_apply_command(Config *config, ConfigCommand *command)
 {
-    void *arg = NULL;
-
     switch (command->arg_type) {
     case TYPE_INTEGER:
         for (size_t i = 0; i < command->argc; i++) {
diff --git a/src/handler.c b/src/handler.c
index b9dda53..d201107 100644
--- a/src/handler.c
+++ b/src/handler.c
@@ -21,28 +21,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "wm.h"
 #include "client.h"
 
-static int wm_xerror_handler(Wm *wm, Display *display, XErrorEvent *e)
-{
-    printf("wm: Error occured. id: %d req_code: %d\n",
-           e->error_code, e->request_code);
-
-    char etext[200];
-    XGetErrorText(wm->display, e->error_code, etext, 200);
-
-    printf("%s\n", etext);
-
-    if (e->error_code == BadAccess) {
-        wm->other_wm = true;
-    }
-
-    return 0;
-}
-
-static int wm_other_wm_handler(Display *display, XErrorEvent *e)
-{
-    return 0;
-}
-
 void wm_create_handler(Wm *wm, XCreateWindowEvent e)
 {
     DEBUG_PRINT("CreateNotify event\n");
@@ -73,7 +51,6 @@ void wm_keyrelease_handler(XKeyReleasedEvent e)
 void wm_keypress_handler(Wm *wm, XKeyPressedEvent e)
 {
     DEBUG_PRINT("KeyPressed event, code: %d\n", e.keycode)
-    Client *c;
     Keybind k;
 
     DEBUG_PRINT("wm->config.kb_count: %d\n", wm->config.kb_count);
@@ -144,8 +121,7 @@ void wm_configure_handler(Wm *wm, XConfigureRequestEvent e)
 {
     DEBUG_PRINT("ConfigureRequest event\n");
 
-	Client *c;
-	XWindowChanges wc;
+    XWindowChanges wc;
 
     wc.x = e.x;
     wc.y = e.y;
diff --git a/src/handler.h b/src/handler.h
index 4a5467e..543b578 100644
--- a/src/handler.h
+++ b/src/handler.h
@@ -30,8 +30,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <X11/Xatom.h>
 #include "wm.h"
 
-static int wm_xerror_handler(Wm *wm, Display *display, XErrorEvent *e);
-static int wm_other_wm_handler(Display *display, XErrorEvent *e);
 void wm_create_handler(Wm *wm, XCreateWindowEvent e);
 void wm_destroy_handler(Wm *wm, XDestroyWindowEvent e);
 void wm_reparent_handler(XReparentEvent e);
diff --git a/src/util.c b/src/util.c
index c32f875..73d9a08 100644
--- a/src/util.c
+++ b/src/util.c
@@ -5,6 +5,8 @@
 #include <string.h>
 #include <assert.h>
 
+static unsigned int node_id = 0;
+
 TreeNode* wm_treenode_new(NodeType type, TreeNode *parent)
 {
     DEBUG_PRINT("%s\n", __func__);
diff --git a/src/util.h b/src/util.h
index dca13d9..c9a3a93 100644
--- a/src/util.h
+++ b/src/util.h
@@ -12,8 +12,6 @@
 #define WM_HORIZ_TOP  0
 #define WM_HORIZ_BOT  1
 
-static unsigned int node_id = 0;
-
 typedef enum NodeType {
     NODE_VERTICAL,
     NODE_HORIZONTAL,
diff --git a/src/wm.c b/src/wm.c
index 13ad336..9cbb5f8 100644
--- a/src/wm.c
+++ b/src/wm.c
@@ -629,7 +629,6 @@ void wm_settings_message_parse(Wm *wm, char *c, int len)
 
     int op; /* 0 = set, 1 = get */
     size_t i = 0;
-    char ret[50];
     char *token;
     char tokens[20][50];
     char *settings[] = {"border-width", "border-color", "focused-border-color",