diff --git a/src/GitVersionCore.Tests/Approved/VariableProviderTests.ProvidesVariablesInContinuousDeliveryModeForFeatureBranch.approved.txt b/src/GitVersionCore.Tests/Approved/VariableProviderTests.ProvidesVariablesInContinuousDeliveryModeForFeatureBranch.approved.txt
new file mode 100644
index 0000000000..6cc023b2aa
--- /dev/null
+++ b/src/GitVersionCore.Tests/Approved/VariableProviderTests.ProvidesVariablesInContinuousDeliveryModeForFeatureBranch.approved.txt
@@ -0,0 +1,32 @@
+{
+  "Major":1,
+  "Minor":2,
+  "Patch":3,
+  "PreReleaseTag":"",
+  "PreReleaseTagWithDash":"",
+  "PreReleaseLabel":"",
+  "PreReleaseNumber":"",
+  "WeightedPreReleaseNumber":"",
+  "BuildMetaData":5,
+  "BuildMetaDataPadded":"0005",
+  "FullBuildMetaData":"5.Branch.feature-123.Sha.commitSha",
+  "MajorMinorPatch":"1.2.3",
+  "SemVer":"1.2.3",
+  "LegacySemVer":"1.2.3",
+  "LegacySemVerPadded":"1.2.3",
+  "AssemblySemVer":"1.2.3.0",
+  "AssemblySemFileVer":"1.2.3.0",
+  "FullSemVer":"1.2.3+5",
+  "InformationalVersion":"1.2.3+5.Branch.feature-123.Sha.commitSha",
+  "BranchName":"feature/123",
+  "Sha":"commitSha",
+  "ShortSha":"commitShortSha",
+  "NuGetVersionV2":"1.2.3",
+  "NuGetVersion":"1.2.3",
+  "NuGetPreReleaseTagV2":"",
+  "NuGetPreReleaseTag":"",
+  "VersionSourceSha":"versionSourceSha",
+  "CommitsSinceVersionSource":5,
+  "CommitsSinceVersionSourcePadded":"0005",
+  "CommitDate":"2014-03-06"
+}
\ No newline at end of file
diff --git a/src/GitVersionCore.Tests/Approved/VariableProviderTests.ProvidesVariablesInContinuousDeliveryModeForFeatureBranchWithCustomAssemblyInformationalFormat.approved.txt b/src/GitVersionCore.Tests/Approved/VariableProviderTests.ProvidesVariablesInContinuousDeliveryModeForFeatureBranchWithCustomAssemblyInformationalFormat.approved.txt
new file mode 100644
index 0000000000..64fd5b3400
--- /dev/null
+++ b/src/GitVersionCore.Tests/Approved/VariableProviderTests.ProvidesVariablesInContinuousDeliveryModeForFeatureBranchWithCustomAssemblyInformationalFormat.approved.txt
@@ -0,0 +1,32 @@
+{
+  "Major":1,
+  "Minor":2,
+  "Patch":3,
+  "PreReleaseTag":"",
+  "PreReleaseTagWithDash":"",
+  "PreReleaseLabel":"",
+  "PreReleaseNumber":"",
+  "WeightedPreReleaseNumber":"",
+  "BuildMetaData":5,
+  "BuildMetaDataPadded":"0005",
+  "FullBuildMetaData":"5.Branch.feature-123.Sha.commitSha",
+  "MajorMinorPatch":"1.2.3",
+  "SemVer":"1.2.3",
+  "LegacySemVer":"1.2.3",
+  "LegacySemVerPadded":"1.2.3",
+  "AssemblySemVer":"1.2.3.0",
+  "AssemblySemFileVer":"1.2.3.0",
+  "FullSemVer":"1.2.3+5",
+  "InformationalVersion":"1.2.3+5.Branch.feature-123.Sha.commitShortSha",
+  "BranchName":"feature/123",
+  "Sha":"commitSha",
+  "ShortSha":"commitShortSha",
+  "NuGetVersionV2":"1.2.3",
+  "NuGetVersion":"1.2.3",
+  "NuGetPreReleaseTagV2":"",
+  "NuGetPreReleaseTag":"",
+  "VersionSourceSha":"versionSourceSha",
+  "CommitsSinceVersionSource":5,
+  "CommitsSinceVersionSourcePadded":"0005",
+  "CommitDate":"2014-03-06"
+}
\ No newline at end of file
diff --git a/src/GitVersionCore.Tests/VariableProviderTests.cs b/src/GitVersionCore.Tests/VariableProviderTests.cs
index db3c4a88de..712846ddf8 100644
--- a/src/GitVersionCore.Tests/VariableProviderTests.cs
+++ b/src/GitVersionCore.Tests/VariableProviderTests.cs
@@ -229,5 +229,59 @@ public void ProvidesVariablesInContinuousDeploymentModeWithTagSetToUseBranchName
 
             vars.FullSemVer.ShouldBe("1.2.3-feature.5");
         }
+
+        [Test]
+        [Category("NoMono")]
+        [Description("Won't run on Mono due to source information not being available for ShouldMatchApproved.")]
+        public void ProvidesVariablesInContinuousDeliveryModeForFeatureBranch()
+        {
+            var semVer = new SemanticVersion
+            {
+                Major = 1,
+                Minor = 2,
+                Patch = 3,
+                BuildMetaData = "5.Branch.feature/123"
+            };
+
+            semVer.BuildMetaData.Branch = "feature/123";
+            semVer.BuildMetaData.VersionSourceSha = "versionSourceSha";
+            semVer.BuildMetaData.Sha = "commitSha";
+            semVer.BuildMetaData.ShortSha = "commitShortSha";
+            semVer.BuildMetaData.CommitDate = DateTimeOffset.Parse("2014-03-06 23:59:59Z");
+
+
+            var config = new TestEffectiveConfiguration();
+
+            var vars = variableProvider.GetVariablesFor(semVer, config, false);
+
+            JsonOutputFormatter.ToJson(vars).ShouldMatchApproved(c => c.SubFolder("Approved"));
+        }
+
+        [Test]
+        [Category("NoMono")]
+        [Description("Won't run on Mono due to source information not being available for ShouldMatchApproved.")]
+        public void ProvidesVariablesInContinuousDeliveryModeForFeatureBranchWithCustomAssemblyInformationalFormat()
+        {
+            var semVer = new SemanticVersion
+            {
+                Major = 1,
+                Minor = 2,
+                Patch = 3,
+                BuildMetaData = "5.Branch.feature/123"
+            };
+
+            semVer.BuildMetaData.Branch = "feature/123";
+            semVer.BuildMetaData.VersionSourceSha = "versionSourceSha";
+            semVer.BuildMetaData.Sha = "commitSha";
+            semVer.BuildMetaData.ShortSha = "commitShortSha";
+            semVer.BuildMetaData.CommitDate = DateTimeOffset.Parse("2014-03-06 23:59:59Z");
+
+
+            var config = new TestEffectiveConfiguration(assemblyInformationalFormat: "{Major}.{Minor}.{Patch}+{CommitsSinceVersionSource}.Branch.{BranchName}.Sha.{ShortSha}");
+
+            var vars = variableProvider.GetVariablesFor(semVer, config, false);
+
+            JsonOutputFormatter.ToJson(vars).ShouldMatchApproved(c => c.SubFolder("Approved"));
+        }
     }
 }
diff --git a/src/GitVersionCore/OutputVariables/VariableProvider.cs b/src/GitVersionCore/OutputVariables/VariableProvider.cs
index d6b45b7768..827f7a3da1 100644
--- a/src/GitVersionCore/OutputVariables/VariableProvider.cs
+++ b/src/GitVersionCore/OutputVariables/VariableProvider.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Text.RegularExpressions;
 using GitVersion.Exceptions;
+using GitVersion.Extensions;
 using GitVersion.VersionCalculation;
 using GitVersion.VersioningModes;
 using GitVersion.Configuration;
@@ -135,7 +136,7 @@ private static string CheckAndFormatString<T>(string formatString, T source, IEn
             {
                 try
                 {
-                    formattedString = formatString.FormatWith(source, environment);
+                    formattedString = formatString.FormatWith(source, environment).RegexReplace("[^0-9A-Za-z-.+]", "-");
                 }
                 catch (ArgumentException formex)
                 {