diff --git a/pyqtgraph/__init__.py b/pyqtgraph/__init__.py
index 5f42e64f..2bad4982 100644
--- a/pyqtgraph/__init__.py
+++ b/pyqtgraph/__init__.py
@@ -52,7 +52,7 @@ CONFIG_OPTIONS = {
     'background': 'k',        ## default background for GraphicsWidget
     'antialias': False,
     'editorCommand': None,  ## command used to invoke code editor from ConsoleWidgets
-    'useWeave': True,       ## Use weave to speed up some operations, if it is available
+    'useWeave': False,       ## Use weave to speed up some operations, if it is available
     'weaveDebug': False,    ## Print full error message if weave compile fails
     'exitCleanup': True,    ## Attempt to work around some exit crash bugs in PyQt and PySide
     'enableExperimental': False, ## Enable experimental features (the curious can search for this key in the code)