diff --git a/includes/module.inc b/includes/module.inc
index fe2a980..b47b19c 100644
--- a/includes/module.inc
+++ b/includes/module.inc
@@ -452,6 +452,8 @@ function module_enable($module_list, $enable_dependencies = TRUE) {
       registry_update();
       // Refresh the schema to include it.
       drupal_get_schema(NULL, TRUE);
+      // Clear all static caches so contrib-modules behave.
+      drupal_static_reset();
       // Update the theme registry to include it.
       drupal_theme_rebuild();
       // Clear entity cache.
@@ -574,6 +576,8 @@ function module_disable($module_list, $disable_dependents = TRUE) {
     module_invoke_all('modules_disabled', $invoke_modules);
     // Update the registry to remove the newly-disabled module.
     registry_update();
+    // Clear all static caches so contrib-modules behave.
+    drupal_static_reset();
     _system_update_bootstrap_status();
     // Update the theme registry to remove the newly-disabled module.
     drupal_theme_rebuild();