diff --git a/configure b/configure
index c4a78376b6..f1c56eb464 100755
--- a/configure
+++ b/configure
@@ -3733,7 +3733,6 @@ case "$target_arch2" in
   ;;
   x86_64)
     TARGET_BASE_ARCH=i386
-    target_phys_bits=64
     target_long_alignment=8
   ;;
   alpha)
@@ -3836,7 +3835,6 @@ case "$target_arch2" in
     target_long_alignment=8
   ;;
   unicore32)
-    target_phys_bits=32
   ;;
   xtensa|xtensaeb)
     TARGET_ARCH=xtensa