diff --git a/src/command/cmd_ac.c b/src/command/cmd_ac.c
index 52535f23..12b2ae9d 100644
--- a/src/command/cmd_ac.c
+++ b/src/command/cmd_ac.c
@@ -1172,14 +1172,14 @@ char*
 cmd_ac_complete(ProfWin* window, const char* const input, gboolean previous)
 {
     // autocomplete command
-    if ((strncmp(input, "/", 1) == 0) && (!str_contains(input, strlen(input), ' '))) {
+    if ((strncmp(input, "/", 1) == 0) && (!strchr(input, ' '))) {
         char* found = NULL;
         found = autocomplete_complete(commands_ac, input, TRUE, previous);
         if (found) {
             return found;
         }
 
-        // autocomplete parameters
+    // autocomplete parameters
     } else {
         char* found = _cmd_ac_complete_params(window, input, previous);
         if (found) {
diff --git a/src/common.c b/src/common.c
index d339a37a..f05bc3ba 100644
--- a/src/common.c
+++ b/src/common.c
@@ -163,18 +163,6 @@ str_replace(const char* string, const char* substr,
     return newstr;
 }
 
-int
-str_contains(const char str[], int size, char ch)
-{
-    int i;
-    for (i = 0; i < size; i++) {
-        if (str[i] == ch)
-            return 1;
-    }
-
-    return 0;
-}
-
 gboolean
 strtoi_range(char* str, int* saveptr, int min, int max, char** err_msg)
 {
diff --git a/src/common.h b/src/common.h
index 588abd10..13332f7a 100644
--- a/src/common.h
+++ b/src/common.h
@@ -84,7 +84,6 @@ gboolean create_dir(char* name);
 gboolean mkdir_recursive(const char* dir);
 gboolean copy_file(const char* const src, const char* const target, const gboolean overwrite_existing);
 char* str_replace(const char* string, const char* substr, const char* replacement);
-int str_contains(const char str[], int size, char ch);
 gboolean strtoi_range(char* str, int* saveptr, int min, int max, char** err_msg);
 int utf8_display_len(const char* const str);