diff --git a/setup.py b/setup.py
index 561b640e6..21edb7b1e 100644
--- a/setup.py
+++ b/setup.py
@@ -580,7 +580,8 @@ class pil_build_ext(build_ext):
                 "PIL._webp", ["_webp.c"], libraries=libs, define_macros=defs))
 
         if feature.tcl and feature.tk:
-            if sys.platform == "darwin":
+            if (sys.platform == "darwin" and
+                os.environ.get('IGNORE_OSX_TCLTK_FRAMEWORKS', False)==False):
                 # locate Tcl/Tk frameworks
                 frameworks = []
                 framework_roots = [