diff --git a/Lib/ihooks.py b/Lib/ihooks.py
index 936a950..f5b93ab 100644
--- a/Lib/ihooks.py
+++ b/Lib/ihooks.py
@@ -322,7 +322,13 @@
         if path:
             m.__path__ = path
         m.__file__ = filename
-        exec code in m.__dict__
+        try:
+            exec code in m.__dict__
+        except:
+            d = self.hooks.modules_dict()
+            if name in d:
+                del d[name]
+            raise
         return m
 
 
diff --git a/Lib/imputil.py b/Lib/imputil.py
index 04111dc..e6ad7ec 100644
--- a/Lib/imputil.py
+++ b/Lib/imputil.py
@@ -297,7 +297,12 @@
 
         # execute the code within the module's namespace
         if not is_module:
-            exec code in module.__dict__
+            try:
+                exec code in module.__dict__
+            except:
+                if fqname in sys.modules:
+                    del sys.modules[fqname]
+                raise
 
         # fetch from sys.modules instead of returning module directly.
         # also make module's __name__ agree with fqname, in case