diff --git a/cpu/sa1100/cpu.c b/cpu/sa1100/cpu.c
index 17e5b0d..f1bd644 100644
--- a/cpu/sa1100/cpu.c
+++ b/cpu/sa1100/cpu.c
@@ -33,14 +33,16 @@
 #include <common.h>
 #include <command.h>
 
+#ifdef CONFIG_USE_IRQ
+DECLARE_GLOBAL_DATA_PTR;
+#endif
+
 int cpu_init (void)
 {
 	/*
 	 * setup up stacks if necessary
 	 */
 #ifdef CONFIG_USE_IRQ
-	DECLARE_GLOBAL_DATA_PTR;
-
 	IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4;
 	FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
 #endif