diff --git a/public/sample_ext_nosdk/AMBuildScript b/public/sample_ext_nosdk/AMBuildScript
index 33f166aee..e79498471 100644
--- a/public/sample_ext_nosdk/AMBuildScript
+++ b/public/sample_ext_nosdk/AMBuildScript
@@ -69,25 +69,12 @@ class ExtensionConfig(object):
     return 'Release'
 
   def detectSDKs(self):
-    if builder.options.sm_path:
-      self.sm_root = builder.options.sm_path
-    else:
-      self.sm_root = ResolveEnvPath('SOURCEMOD112', 'sourcemod-1.12')
-      if not self.sm_root:
-        self.sm_root = ResolveEnvPath('SOURCEMOD', 'sourcemod')
-      if not self.sm_root:
-        self.sm_root = ResolveEnvPath('SOURCEMOD_DEV', 'sourcemod-central')
-
-    if not self.sm_root or not os.path.isdir(self.sm_root):
-      raise Exception('Could not find a source copy of SourceMod')
-    self.sm_root = Normalize(self.sm_root)
-
     if builder.options.mms_path:
       self.mms_root = builder.options.mms_path
     else:
       self.mms_root = ResolveEnvPath('MMSOURCE112', 'mmsource-1.12')
       if not self.mms_root:
-        self.mms_root = ResolveEnvPath('MMSOURCE', 'metamod-source')
+        self.mms_root = ResolveEnvPath('MMSOURCE_DEV', 'metamod-source')
       if not self.mms_root:
         self.mms_root = ResolveEnvPath('MMSOURCE_DEV', 'mmsource-central')
 
@@ -95,6 +82,19 @@ class ExtensionConfig(object):
       raise Exception('Could not find a source copy of Metamod:Source')
     self.mms_root = Normalize(self.mms_root)
 
+    if builder.options.sm_path:
+      self.sm_root = builder.options.sm_path
+    else:
+      self.sm_root = ResolveEnvPath('SOURCEMOD112', 'sourcemod-1.12')
+      if not self.sm_root:
+        self.sm_root = ResolveEnvPath('SOURCEMOD_DEV', 'sourcemod')
+      if not self.sm_root:
+        self.sm_root = ResolveEnvPath('SOURCEMOD_DEV', 'sourcemod-central')
+
+    if not self.sm_root or not os.path.isdir(self.sm_root):
+      raise Exception('Could not find a source copy of SourceMod')
+    self.sm_root = Normalize(self.sm_root)
+
   def configure(self):
     
     allowed_archs = ['x86','x86_64']