diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index b383a20af4..6f5c879e0a 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -780,6 +780,9 @@ static void f_call(typval_T *argvars, typval_T *rettv, FunPtr fptr)
   if (argvars[2].v_type != VAR_UNKNOWN) {
     if (argvars[2].v_type != VAR_DICT) {
       emsg(_(e_dictreq));
+      if (owned) {
+        func_unref(func);
+      }
       return;
     }
     selfdict = argvars[2].vval.v_dict;
diff --git a/src/nvim/runtime.c b/src/nvim/runtime.c
index 9f6d129392..28d85b54bd 100644
--- a/src/nvim/runtime.c
+++ b/src/nvim/runtime.c
@@ -1243,10 +1243,11 @@ char *runtimepath_default(bool clean_arg)
                                          AFTER_SIZE + 1);
   rtp_size += compute_double_env_sep_len(config_dirs, NVIM_SIZE + 1,
                                          AFTER_SIZE + 1);
+  char *rtp = NULL;
   if (rtp_size == 0) {
-    return NULL;
+    goto freeall;
   }
-  char *const rtp = xmalloc(rtp_size);
+  rtp = xmalloc(rtp_size);
   char *rtp_cur = rtp;
   rtp_cur = add_dir(rtp_cur, config_home, config_len, kXDGConfigHome,
                     NULL, 0, NULL, 0);
@@ -1271,6 +1272,7 @@ char *runtimepath_default(bool clean_arg)
   assert((size_t)(rtp_cur - rtp) == rtp_size);
 #undef SITE_SIZE
 #undef AFTER_SIZE
+freeall:
   xfree(data_dirs);
   xfree(config_dirs);
   xfree(data_home);
diff --git a/src/nvim/sign.c b/src/nvim/sign.c
index 24da650743..940cd1d274 100644
--- a/src/nvim/sign.c
+++ b/src/nvim/sign.c
@@ -1176,21 +1176,27 @@ static void sign_define_cmd(char_u *sign_name, char_u *cmdline)
     p = skiptowhite_esc(arg);
     if (STRNCMP(arg, "icon=", 5) == 0) {
       arg += 5;
+      XFREE_CLEAR(icon);
       icon = vim_strnsave(arg, (size_t)(p - arg));
     } else if (STRNCMP(arg, "text=", 5) == 0) {
       arg += 5;
+      XFREE_CLEAR(text);
       text = vim_strnsave(arg, (size_t)(p - arg));
     } else if (STRNCMP(arg, "linehl=", 7) == 0) {
       arg += 7;
+      XFREE_CLEAR(linehl);
       linehl = vim_strnsave(arg, (size_t)(p - arg));
     } else if (STRNCMP(arg, "texthl=", 7) == 0) {
       arg += 7;
+      XFREE_CLEAR(texthl);
       texthl = vim_strnsave(arg, (size_t)(p - arg));
     } else if (STRNCMP(arg, "culhl=", 6) == 0) {
       arg += 6;
+      XFREE_CLEAR(culhl);
       culhl = vim_strnsave(arg, (size_t)(p - arg));
     } else if (STRNCMP(arg, "numhl=", 6) == 0) {
       arg += 6;
+      XFREE_CLEAR(numhl);
       numhl = vim_strnsave(arg, (size_t)(p - arg));
     } else {
       semsg(_(e_invarg2), arg);
diff --git a/test/functional/ex_cmds/sign_spec.lua b/test/functional/ex_cmds/sign_spec.lua
index 891cfe1670..f280a45174 100644
--- a/test/functional/ex_cmds/sign_spec.lua
+++ b/test/functional/ex_cmds/sign_spec.lua
@@ -1,5 +1,5 @@
 local helpers = require('test.functional.helpers')(after_each)
-local clear, nvim, eq = helpers.clear, helpers.nvim, helpers.eq
+local clear, nvim, eq, assert_alive = helpers.clear, helpers.nvim, helpers.eq, helpers.assert_alive
 
 describe('sign', function()
   before_each(clear)
@@ -21,4 +21,11 @@ describe('sign', function()
       end)
     end)
   end)
+
+  describe('define {id}', function()
+    it ('does not leak memory when specifying multiple times the same argument', function()
+      nvim('command', 'sign define Foo culhl=Normal culhl=Normal')
+      assert_alive()
+    end)
+  end)
 end)