diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9ec6d2c3a..9ccb4133e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,20 +46,25 @@ function (die msg)
 endfunction ()
 
 if (NOT ${ARCH} STREQUAL "")
-	string(SUBSTRING ${ARCH} 0 5 ARM_TEST)
-	string(TOLOWER ${ARM_TEST} ARM_TEST)
+	string(SUBSTRING ${ARCH} 0 3 IS_ARM)
+	string(TOLOWER ${IS_ARM} IS_ARM)
+
+	if (${IS_ARM} STREQUAL "arm")
+		string(SUBSTRING ${ARCH} 0 5 ARM_TEST)
+		string(TOLOWER ${ARM_TEST} ARM_TEST)
 	
-	if (${ARM_TEST} STREQUAL "armv6")
-		set(ARM6 1)
-	else()
-		set(ARM6 0)
-	endif()
+		if (${ARM_TEST} STREQUAL "armv6")
+			set(ARM6 1)
+		else()
+			set(ARM6 0)
+		endif()
 	   
-	if (${ARM_TEST} STREQUAL "armv7")
-		set(ARM7 1)
-	else()
-		set(ARM7 0)
-	endif()	
+		if (${ARM_TEST} STREQUAL "armv7")
+			set(ARM7 1)
+		else()
+			set(ARM7 0)
+		endif()	
+	endif()
 endif()
 
 if(WIN32 OR ARM7 OR ARM6)