diff --git a/include/etl/private/to_string_helper.h b/include/etl/private/to_string_helper.h
index ea91bf12..0b7d123a 100644
--- a/include/etl/private/to_string_helper.h
+++ b/include/etl/private/to_string_helper.h
@@ -270,11 +270,11 @@ namespace etl
     //***************************************************************************
     template <typename TIString>
     void add_integral_and_fractional(const uint64_t integral,
-                                 const uint64_t fractional,
-                                 TIString& str,
-                                 const etl::basic_format_spec<TIString>& integral_format,
-                                 const etl::basic_format_spec<TIString>& fractional_format,
-                                 const bool negative)
+                                     const uint64_t fractional,
+                                     TIString& str,
+                                     const etl::basic_format_spec<TIString>& integral_format,
+                                     const etl::basic_format_spec<TIString>& fractional_format,
+                                     const bool negative)
     {
       typedef typename TIString::value_type type;
 
diff --git a/test/test_to_string.cpp b/test/test_to_string.cpp
index 3b62bf5b..0b3ed974 100644
--- a/test/test_to_string.cpp
+++ b/test/test_to_string.cpp
@@ -598,15 +598,15 @@ namespace
     }
     
     //*************************************************************************
-    TEST(test_double_formatting_10_decimal_point)
+    TEST(test_double_formatting_15_decimal_point)
     {
       etl::string<20> result_d;
-      double value_d = 1.2345;
+      double value_d = 1.234567890123456;
       
-      Format format = Format().precision(10);
+      Format format = Format().precision(15);
       etl::to_string(value_d, result_d, format);
 
-      CHECK_EQUAL(etl::string<20>(STR("1.2345000000")).c_str(), result_d.c_str());
+      CHECK_EQUAL(etl::string<20>(STR("1.234567890123456")).c_str(), result_d.c_str());
     }
 
     //*************************************************************************