diff --git a/Editor/Build/BuildProject.cs b/Editor/Build/BuildProject.cs
index 265a587..c78f28a 100644
--- a/Editor/Build/BuildProject.cs
+++ b/Editor/Build/BuildProject.cs
@@ -189,6 +189,16 @@ private static void PerformBuild(string[] buildConfigs, BuildOptions options = B
         int successCount = 0;
         int failCount = 0;
 
+        // Save current script defines, build constants, etc. so we can restore them after build.
+        string currentDefines = PlayerSettings.GetScriptingDefineSymbolsForGroup(BuildTargetGroup.Standalone);
+        string buildConstantsPath = BuildConstantsGenerator.FindFile();
+        string currentBuildConstantsFile = null;
+        if (!string.IsNullOrEmpty(buildConstantsPath))
+        {
+            currentBuildConstantsFile = FileUtil.GetUniqueTempPathInProject();
+            File.Copy(buildConstantsPath, currentBuildConstantsFile);
+        }
+
         DateTime buildTime;
         PerformPreBuild(out buildTime);
 
@@ -213,6 +223,14 @@ private static void PerformBuild(string[] buildConfigs, BuildOptions options = B
 
         PerformPostBuild();
 
+        // Restore editor status.
+        PlayerSettings.SetScriptingDefineSymbolsForGroup(BuildTargetGroup.Standalone, currentDefines);
+        if (!string.IsNullOrEmpty(buildConstantsPath))
+        {
+            File.Copy(currentBuildConstantsFile, buildConstantsPath, true);
+            File.Delete(currentBuildConstantsFile);
+        }
+
         // Report success/failure.
         StringBuilder sb = new StringBuilder();
         if (failCount == 0)
diff --git a/Editor/BuildConstantsGenerator.cs b/Editor/BuildConstantsGenerator.cs
index db38626..de89a6b 100644
--- a/Editor/BuildConstantsGenerator.cs
+++ b/Editor/BuildConstantsGenerator.cs
@@ -12,15 +12,8 @@ public static class BuildConstantsGenerator
 {
     public const string NONE = "None";
 
-    public static void Generate(
-        DateTime buildTime,
-        string currentVersion = "",
-        BuildReleaseType currentReleaseType = null,
-        BuildPlatform currentBuildPlatform = null,
-        BuildArchitecture currentBuildArchitecture = null,
-        BuildDistribution currentBuildDistribution = null)
+    public static string FindFile()
     {
-        // Find the BuildConstants file.
         string[] fileSearchResults = Directory.GetFiles(Application.dataPath, "BuildConstants.cs", SearchOption.AllDirectories);
         string filePath = null;
         string desiredFilePath = string.Format("UnityBuild{0}BuildConstants.cs", Path.DirectorySeparatorChar);
@@ -33,6 +26,20 @@ public static void Generate(
             }
         }
 
+        return filePath;
+    }
+
+    public static void Generate(
+        DateTime buildTime,
+        string currentVersion = "",
+        BuildReleaseType currentReleaseType = null,
+        BuildPlatform currentBuildPlatform = null,
+        BuildArchitecture currentBuildArchitecture = null,
+        BuildDistribution currentBuildDistribution = null)
+    {
+        // Find the BuildConstants file.
+        string filePath = FindFile();
+
         if (string.IsNullOrEmpty(filePath))
         {
             return;