diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/DiagnosticAnalyzerDriver/DiagnosticAnalyzerDriverTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/DiagnosticAnalyzerDriver/DiagnosticAnalyzerDriverTests.cs
index 218d4cefc70fb395180367e55917a8101c21e64d..87c98f8980ca8960f0cf93600f5b115f5b9b223c 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/DiagnosticAnalyzerDriver/DiagnosticAnalyzerDriverTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/DiagnosticAnalyzerDriver/DiagnosticAnalyzerDriverTests.cs
@@ -679,7 +679,7 @@ public async Task TestNuGetAndVsixAnalyzer_SuppressorSuppressesVsixAnalyzer()
             //   1) No duplicate diagnostics
             //   2) Both NuGet and Vsix analyzers execute
             //   3) Only Nuget suppressor executes
-            //   4) Appropriate diagnostic filtering is done - Nuget suppressor uppresses VSIX analyzer.
+            //   4) Appropriate diagnostic filtering is done - Nuget suppressor suppresses VSIX analyzer.
             await TestNuGetAndVsixAnalyzerCoreAsync(
                 nugetAnalyzers: ImmutableArray.Create(firstNugetAnalyzer),
                 expectedNugetAnalyzersExecuted: true,
diff --git a/src/Test/Utilities/Portable/Diagnostics/DiagnosticDescription.cs b/src/Test/Utilities/Portable/Diagnostics/DiagnosticDescription.cs
index cd2db7afb238e36a526eb605513879cd1fb9bd58..02e7030dfa1d862419e4d03b841cc286ce9e308b 100644
--- a/src/Test/Utilities/Portable/Diagnostics/DiagnosticDescription.cs
+++ b/src/Test/Utilities/Portable/Diagnostics/DiagnosticDescription.cs
@@ -113,13 +113,14 @@ private IEnumerable<string> GetArgumentsAsStrings()
             _isSuppressed = isSuppressed;
         }
 
-        public DiagnosticDescription(Diagnostic d, bool errorCodeOnly, bool includeDefaultSeverity = false, bool includeEffectiveSeverity = false)
+        public DiagnosticDescription(Diagnostic d, bool errorCodeOnly, bool includeDefaultSeverity = false, bool includeEffectiveSeverity = false, bool isSuppressed = false)
         {
             _code = d.Code;
             _isWarningAsError = d.IsWarningAsError;
             _location = d.Location;
             _defaultSeverityOpt = includeDefaultSeverity ? d.DefaultSeverity : (DiagnosticSeverity?)null;
             _effectiveSeverityOpt = includeEffectiveSeverity ? d.Severity : (DiagnosticSeverity?)null;
+            _isSuppressed = isSuppressed;
 
             DiagnosticWithInfo dinfo = null;
             if (d.Code == 0 || d.Descriptor.CustomTags.Contains(WellKnownDiagnosticTags.CustomObsolete))
@@ -240,6 +241,9 @@ public override bool Equals(object obj)
             if (_isWarningAsError != d._isWarningAsError)
                 return false;
 
+            if (_isSuppressed != d._isSuppressed)
+                return false;
+
             if (!_ignoreArgumentsWhenComparing)
             {
                 if (_squiggledText != d._squiggledText)
@@ -328,6 +332,7 @@ public override int GetHashCode()
             int hashCode;
             hashCode = _code.GetHashCode();
             hashCode = Hash.Combine(_isWarningAsError.GetHashCode(), hashCode);
+            hashCode = Hash.Combine(_isSuppressed.GetHashCode(), hashCode);
 
             // TODO: !!! This implementation isn't consistent with Equals, which might ignore inequality of some members based on ignoreArgumentsWhenComparing flag, etc.
             hashCode = Hash.Combine(_squiggledText, hashCode);
@@ -373,6 +378,9 @@ public override string ToString()
                 sb.Append('"');
             }
 
+            sb.Append(", isSuppressed: ");
+            sb.Append(_isSuppressed ? "true" : "false");
+
             sb.Append(")");
 
             if (_arguments != null)