diff --git a/src/core/wee-string.h b/src/core/wee-string.h
index 044d3d0a5..5daf9052d 100644
--- a/src/core/wee-string.h
+++ b/src/core/wee-string.h
@@ -48,6 +48,7 @@ extern char *string_remove_quotes (const char *string, const char *quotes);
 extern char *string_strip (const char *string, int left, int right,
                            const char *chars);
 extern char *string_convert_escaped_chars (const char *string);
+extern int string_is_word_char (const char *string);
 extern char *string_mask_to_regex (const char *mask);
 extern const char *string_regex_flags (const char *regex, int default_flags,
                                        int *flags);
diff --git a/tests/unit/core/test-string.cpp b/tests/unit/core/test-string.cpp
index f430d870d..729286e41 100644
--- a/tests/unit/core/test-string.cpp
+++ b/tests/unit/core/test-string.cpp
@@ -363,7 +363,6 @@ TEST(String, ConvertEscapedChars)
  *   string_is_word_char
  */
 
-/*
 TEST(String, IsWordChar)
 {
     LONGS_EQUAL(0, string_is_word_char (NULL));
@@ -379,7 +378,6 @@ TEST(String, IsWordChar)
     LONGS_EQUAL(1, string_is_word_char ("_abc"));
     LONGS_EQUAL(1, string_is_word_char ("|abc"));
 }
-*/
 
 /*
  * Tests functions: