diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index be1259b..252946c 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -89,7 +89,7 @@
 	 */
 	image_decomp_size = PAGE_ALIGN(image_size * 5);
 	if (mem_size >= SZ_64M)
-		image_decomp_size = max(image_decomp_size, SZ_32M);
+		image_decomp_size = max_t(size_t, image_decomp_size, SZ_32M);
 
 	/*
 	 * By default put oftree/initrd close behind compressed kernel image to