diff --git a/include/asm-x86/acpi.h b/include/asm-x86/acpi.h
index 7a72d6a..14411c9 100644
--- a/include/asm-x86/acpi.h
+++ b/include/asm-x86/acpi.h
@@ -67,16 +67,16 @@
  */
 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
 	asm("divl %2;"				     \
-	    :"=a"(q32), "=d"(r32)		     \
-	    :"r"(d32),				     \
+	    : "=a"(q32), "=d"(r32)		     \
+	    : "r"(d32),				     \
 	     "0"(n_lo), "1"(n_hi))
 
 
 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
 	asm("shrl   $1,%2	;"	\
 	    "rcrl   $1,%3;"		\
-	    :"=r"(n_hi), "=r"(n_lo)	\
-	    :"0"(n_hi), "1"(n_lo))
+	    : "=r"(n_hi), "=r"(n_lo)	\
+	    : "0"(n_hi), "1"(n_lo))
 
 #ifdef CONFIG_ACPI
 extern int acpi_lapic;