--- a/dom/media/eme/MediaKeySystemAccess.cpp
+++ b/dom/media/eme/MediaKeySystemAccess.cpp
@@ -156,27 +156,16 @@ EnsureMinCDMVersion(mozIGeckoMediaPlugin
     return MediaKeySystemStatus::Error;
   }
 
   if (!hasPlugin) {
     aOutMessage = NS_LITERAL_CSTRING("CDM is not installed");
     return MediaKeySystemStatus::Cdm_not_installed;
   }
 
-  if (aMinCdmVersion == NO_CDM_VERSION) {
-    return MediaKeySystemStatus::Available;
-  }
-
-  nsresult rv;
-  int32_t version = versionStr.ToInteger(&rv);
-  if (NS_FAILED(rv) || version < 0 || aMinCdmVersion > version) {
-    aOutMessage = NS_LITERAL_CSTRING("Installed CDM version insufficient");
-    return MediaKeySystemStatus::Cdm_insufficient_version;
-  }
-
 #ifdef XP_WIN
   if (aKeySystem.EqualsLiteral("com.adobe.access") ||
       aKeySystem.EqualsLiteral("com.adobe.primetime")) {
     // Verify that anti-virus hasn't "helpfully" deleted the Adobe GMP DLL,
     // as we suspect may happen (Bug 1160382).
     bool somethingMissing = false;
     if (!AdobePluginDLLExists(versionStr)) {
       aOutMessage = NS_LITERAL_CSTRING("Adobe DLL was expected to be on disk but was not");
@@ -192,16 +181,24 @@ EnsureMinCDMVersion(mozIGeckoMediaPlugin
       // Firefox will try to download the plugin next time the updater runs.
       Preferences::ClearUser("media.gmp-eme-adobe.lastUpdate");
       Preferences::ClearUser("media.gmp-eme-adobe.version");
       return MediaKeySystemStatus::Cdm_not_installed;
     }
   }
 #endif
 
+  nsresult rv;
+  int32_t version = versionStr.ToInteger(&rv);
+  if (aMinCdmVersion != NO_CDM_VERSION &&
+      (NS_FAILED(rv) || version < 0 || aMinCdmVersion > version)) {
+    aOutMessage = NS_LITERAL_CSTRING("Installed CDM version insufficient");
+    return MediaKeySystemStatus::Cdm_insufficient_version;
+  }
+
   return MediaKeySystemStatus::Available;
 }
 
 /* static */
 MediaKeySystemStatus
 MediaKeySystemAccess::GetKeySystemStatus(const nsAString& aKeySystem,
                                          int32_t aMinCdmVersion,
                                          nsACString& aOutMessage)