diff --git a/usr/include/arch/arm/klibc/asmmacros.h b/usr/include/arch/arm/klibc/asmmacros.h
index 45bea0e..a6810ce 100644
--- a/usr/include/arch/arm/klibc/asmmacros.h
+++ b/usr/include/arch/arm/klibc/asmmacros.h
@@ -7,26 +7,6 @@
 #ifndef _KLIBC_ASMMACROS_H
 #define _KLIBC_ASMMACROS_H
 
-/* An immediate in ARM can be any 8-bit value rotated by an even number of bits */
-
-#define ARM_VALID_IMM(x)	\
-	((((x) & ~0x000000ff) == 0) || \
-	 (((x) & ~0x000003fc) == 0) || \
-	 (((x) & ~0x00000ff0) == 0) || \
-	 (((x) & ~0x00003fc0) == 0) || \
-	 (((x) & ~0x0000ff00) == 0) || \
-	 (((x) & ~0x0003fc00) == 0) || \
-	 (((x) & ~0x000ff000) == 0) || \
-	 (((x) & ~0x003fc000) == 0) || \
-	 (((x) & ~0x00ff0000) == 0) || \
-	 (((x) & ~0x03fc0000) == 0) || \
-	 (((x) & ~0x0ff00000) == 0) || \
-	 (((x) & ~0x3fc00000) == 0) || \
-	 (((x) & ~0xff000000) == 0) || \
-	 (((x) & ~0xfc000003) == 0) || \
-	 (((x) & ~0xf000000f) == 0) || \
-	 (((x) & ~0xc000003f) == 0))
-
 #if _KLIBC_ARM_USE_BX
 # define BX(x) bx	x
 #else