diff --git a/src/detector.h b/src/detector.h
index 53277b84..48d19dc3 100644
--- a/src/detector.h
+++ b/src/detector.h
@@ -31,4 +31,7 @@ const char *ohcount_detect_language(SourceFile *sourcefile);
 
 int ohcount_is_binary_filename(const char *filename);
 
+/* Exported for unit testing */
+void escape_path(char *safe, const char *unsafe);
+
 #endif
diff --git a/test/unit/detector_test.h b/test/unit/detector_test.h
index 40b33905..ae7f9d44 100755
--- a/test/unit/detector_test.h
+++ b/test/unit/detector_test.h
@@ -191,7 +191,24 @@ void test_detector_emacs_mode() {
 	ASSERT_DETECT(LANG_C, "emacs_mode.c");
 }
 
+void test_detector_escape_path() {
+  char escaped[100];
+
+  escape_path(escaped, "");
+  assert(strcmp(escaped, "") == 0);
+
+  escape_path(escaped, "hello.c");
+  assert(strcmp(escaped, "hello.c") == 0);
+
+  escape_path(escaped, "'");
+  assert(strcmp(escaped, "\'\\\'\'") == 0);
+
+  escape_path(escaped, "Robin's 'Fancy' Filename");
+  assert(strcmp(escaped, "Robin\'\\\'\'s \'\\\'\'Fancy\'\\\'\' Filename") == 0);
+}
+
 void all_detector_tests() {
+  test_detector_escape_path();
   test_detector_smalltalk();
   test_detector_disambiguate_asx();
   test_detector_disambiguate_def();