diff --git a/.github/workflows/gcc.yml b/.github/workflows/gcc.yml
index 5e1ea8f1..b50e8ff7 100644
--- a/.github/workflows/gcc.yml
+++ b/.github/workflows/gcc.yml
@@ -1,7 +1,7 @@
 name: gcc
 on:
   push:
-    branches: [ master ]
+    branches: [ master, hotfix/issue-314-constexpr ]
   pull_request:
     branches: [ master ]
 
diff --git a/.github/workflows/vs2019.yml b/.github/workflows/vs2019.yml
index 7d4328ba..34023277 100644
--- a/.github/workflows/vs2019.yml
+++ b/.github/workflows/vs2019.yml
@@ -22,6 +22,7 @@ jobs:
     - name: Build
       run: |
         cmake -G "Visual Studio 16 2019" -DBUILD_TESTS=ON ./
+        MSBuild.exe -version
         MSBuild.exe etl.sln
         
     - name: Run tests
@@ -43,6 +44,7 @@ jobs:
     - name: Build
       run: |
         cmake -G "Visual Studio 16 2019" -DBUILD_TESTS=ON -DNO_STL=ON ./
+        MSBuild.exe -version
         MSBuild.exe etl.sln
         
     - name: Run tests
diff --git a/test/test_to_string.cpp b/test/test_to_string.cpp
index 84a42d61..8ea9835b 100644
--- a/test/test_to_string.cpp
+++ b/test/test_to_string.cpp
@@ -45,6 +45,15 @@ namespace
 
   SUITE(test_to_string)
   {
+    TEST(test_issue_314)
+    {
+      etl::string<20> str;
+
+      etl::format_spec ft;
+      ft.precision(6);
+      etl::to_string('c', str, ft, true);
+    }
+
     //*************************************************************************
     TEST(test_default_format_no_append)
     {