diff --git a/compiler/arm/aasmcpu.pas b/compiler/arm/aasmcpu.pas
index 24907f692a..7738c86480 100644
--- a/compiler/arm/aasmcpu.pas
+++ b/compiler/arm/aasmcpu.pas
@@ -714,7 +714,8 @@ implementation
           A_FSITOS,A_FSITOD,A_FTOSIS,A_FTOSID,
           A_FTOUIS,A_FTOUID,A_FUITOS,A_FUITOD,
           A_SXTB16,A_UXTB16,
-          A_UXTB,A_UXTH,A_SXTB,A_SXTH:
+          A_UXTB,A_UXTH,A_SXTB,A_SXTH,
+          A_NEG:
             if opnr=0 then
               result:=operand_write
             else