--- a/gtkdoc.py
+++ b/gtkdoc.py
@@ -319,9 +319,9 @@ class GTKDoc(object):
             ldflags = ' "-L%s" %s ' % (self.library_path, additional_ldflags) +
 ldflags
             current_ld_library_path = env.get('LD_LIBRARY_PATH')
             if current_ld_library_path:
-                env['RUN'] = 'LD_LIBRARY_PATH="%s:%s" ' % (self.library_path, current_ld_library_path)
+                env['LD_LIBRARY_PATH'] = '%s:%s' % (self.library_path, current_ld_library_path)
             else:
-                env['RUN'] = 'LD_LIBRARY_PATH="%s" ' % self.library_path
+                env['LD_LIBRARY_PATH'] = self.library_path
 
         if ldflags:
             env['LDFLAGS'] = '%s %s' % (ldflags, env.get('LDFLAGS', ''))
@@ -332,8 +332,6 @@ class GTKDoc(object):
             self.logger.debug('CFLAGS=%s', env['CFLAGS'])
         if 'LDFLAGS' in env:
             self.logger.debug('LDFLAGS %s', env['LDFLAGS'])
-        if 'RUN' in env:
-            self.logger.debug('RUN=%s', env['RUN'])
         self._run_command(['gtkdoc-scangobj', '--module=%s' % self.module_name],
                           env=env, cwd=self.output_dir)