diff --git a/include/asm-x86/iommu.h b/include/asm-x86/iommu.h
index 07862fdd23c0e195f76cfb3753d136296c2371cd..cb7e9891bfd27708211fb924d76aad504f2498b2 100644
--- a/include/asm-x86/iommu.h
+++ b/include/asm-x86/iommu.h
@@ -5,7 +5,7 @@ extern void pci_iommu_shutdown(void);
 extern void no_iommu_init(void);
 extern int force_iommu, no_iommu;
 extern int iommu_detected;
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
 extern void gart_iommu_init(void);
 extern void gart_iommu_shutdown(void);
 extern void __init gart_parse_options(char *);