diff --git a/exe/hooks/rthook.py b/exe/hooks/rthook.py
index 53a9af14b6..ec0b3264a8 100644
--- a/exe/hooks/rthook.py
+++ b/exe/hooks/rthook.py
@@ -1,9 +1,6 @@
-import sys
 import os
-import multiprocessing
 import platform
-
-multiprocessing.freeze_support()
+import sys
 
 os.environ['PROJ_LIB'] = os.path.join(sys._MEIPASS, 'proj')
 
diff --git a/src/natcap/invest/__main__.py b/src/natcap/invest/__main__.py
index 1f68c51913..167e0fc170 100644
--- a/src/natcap/invest/__main__.py
+++ b/src/natcap/invest/__main__.py
@@ -1,5 +1,11 @@
+import multiprocessing
 import sys
 
+# We want to guarantee that this is called BEFORE any other processes start,
+# which could happen at import time.
+if __name__ == '__main__':
+    multiprocessing.freeze_support()
+
 from . import cli
 
 if __name__ == '__main__':