diff --git a/sys/vmm/vmm_mmap.c b/sys/vmm/vmm_mmap.c
index dfda0f2..0563c16 100644
--- a/sys/vmm/vmm_mmap.c
+++ b/sys/vmm/vmm_mmap.c
@@ -233,7 +233,7 @@
 
         td->td_retval[0] = ( uint32_t ) tmp;
 
-        if( td->td_retval[0] == ( caddr_t ) -1 )
+        if( td->td_retval[0] == ( int ) -1 )
             kpanic( "MMAP_FAILED" );
 
     }