1 files changed, 5 insertions, 2 deletions

diff --git a/src/engine/EngineForExtension.cpp b/src/engine/EngineForExtension.cpp
index c165e2c2..585b74a4 100644
--- a/src/engine/EngineForExtension.cpp
+++ b/src/engine/EngineForExtension.cpp
@@ -273,8 +273,11 @@ static HRESULT BEEngineSetVariableVersion(
 
     if (wzVariable && *wzVariable)
     {
-        hr = VerParseVersion(wzValue, 0, FALSE, &pVersion);
-        ExitOnFailure(hr, "Failed to parse new version value.");
+        if (wzValue)
+        {
+            hr = VerParseVersion(wzValue, 0, FALSE, &pVersion);
+            ExitOnFailure(hr, "Failed to parse new version value.");
+        }
 
         hr = VariableSetVersion(&pContext->pEngineState->variables, wzVariable, pVersion, FALSE);
         ExitOnFailure(hr, "Failed to set version variable.");