diff --git a/tests/unit/test-common.h b/tests/unit/test-common.h
index 59e72bc91..4bb3850df 100644
--- a/tests/unit/test-common.h
+++ b/tests/unit/test-common.h
@@ -62,41 +62,4 @@ do \
   srand (seed); \
 } while (0)
 
-/**
- * Provide log message to filestream implementation for the engine.
- */
-int jerry_port_logmsg (FILE *stream, /**< stream pointer */
-                       const char *format, /**< format string */
-                       ...) /**< parameters */
-{
-  va_list args;
-  int count;
-  va_start (args, format);
-  count = vfprintf (stream, format, args);
-  va_end (args);
-  return count;
-} /* jerry_port_logmsg */
-
-/**
- * Provide error message to console implementation for the engine.
- */
-int jerry_port_errormsg (const char *format, /**< format string */
-                         ...) /**< parameters */
-{
-  va_list args;
-  int count;
-  va_start (args, format);
-  count = vfprintf (stderr, format, args);
-  va_end (args);
-  return count;
-} /* jerry_port_errormsg */
-
-/**
- * Provide output character to console implementation for the engine.
- */
-int jerry_port_putchar (int c) /**< character to put */
-{
-  return putchar (c);
-} /* jerry_port_putchar */
-
 #endif /* TEST_COMMON_H */