diff --git a/scheme/ikarus.symbols.ss b/scheme/ikarus.symbols.ss
index 50792f4..9502048 100644
--- a/scheme/ikarus.symbols.ss
+++ b/scheme/ikarus.symbols.ss
@@ -23,12 +23,12 @@
           $unintern-gensym
           reset-symbol-proc! system-value system-value-gensym)
   (import 
-    (ikarus system $symbols)
+    (except (ikarus system $symbols) $unintern-gensym)
     (ikarus system $pairs)
     (ikarus system $fx)
     (except (ikarus) gensym gensym? gensym->unique-string
       gensym-prefix gensym-count print-gensym system-value
-      $unintern-gensym string->symbol symbol->string
+      string->symbol symbol->string
       getprop putprop remprop property-list
       top-level-value top-level-bound? set-top-level-value!
       symbol-value symbol-bound? set-symbol-value! reset-symbol-proc!))
diff --git a/scheme/last-revision b/scheme/last-revision
index 9190a7f..0632d50 100644
--- a/scheme/last-revision
+++ b/scheme/last-revision
@@ -1 +1 @@
-1670
+1671
diff --git a/scheme/psyntax.compat.ss b/scheme/psyntax.compat.ss
index 8440ec7..d78c723 100644
--- a/scheme/psyntax.compat.ss
+++ b/scheme/psyntax.compat.ss
@@ -23,7 +23,7 @@
           read-library-source-file
           library-version-mismatch-warning
           file-locator-resolution-error
-          label-binding set-label-binding!)
+          label-binding set-label-binding! remove-location)
   (import 
     (only (ikarus.compiler) eval-core)
     (only (ikarus.reader.annotated) read-library-source-file)
@@ -64,6 +64,11 @@
   
   (define (set-label-binding! label binding)
     (set-symbol-value! label binding))
-  (define (label-binding label)
-    (and (symbol-bound? label) (symbol-value label))))
+
+  (define (label-binding label)
+    (and (symbol-bound? label) (symbol-value label)))
+  
+  (define (remove-location x)
+    (import (ikarus system $symbols))
+    ($unintern-gensym x)))
 
diff --git a/scheme/psyntax.library-manager.ss b/scheme/psyntax.library-manager.ss
index 2373552..ac0515c 100644
--- a/scheme/psyntax.library-manager.ss
+++ b/scheme/psyntax.library-manager.ss
@@ -280,7 +280,14 @@
                 (lambda (x) (equal? (library-name x) name)))])
          (when (and err? (not lib))
            (assertion-violation who "library not installed" name))
-         ((current-library-collection) lib #t))]
+         ((current-library-collection) lib #t)
+         (for-each
+           (lambda (x) 
+             (let ((label (car x)) (binding (cdr x)))
+               (remove-location label)
+               (when (memq (car binding) '(global global-macro global-macro!))
+                  (remove-location (cdr binding)))))
+           (library-env lib)))]
       [(name) (uninstall-library name #t)]))
 
   (define (library-exists? name)