diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index b71e866973..17883686f0 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1256,7 +1256,8 @@ struct exec
 
 /* Necessary parameters */
 #define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
-#define TARGET_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(TARGET_ELF_EXEC_PAGESIZE-1))
+#define TARGET_ELF_PAGESTART(_v) ((_v) & \
+                                 ~(abi_ulong)(TARGET_ELF_EXEC_PAGESIZE-1))
 #define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
 
 #define DLINFO_ITEMS 14