diff --git a/configure.in b/configure.in
index 7b6e626ffa81..0df935078c7d 100644
--- a/configure.in
+++ b/configure.in
@@ -1282,7 +1282,7 @@ if test -n "$CROSS_COMPILE"; then
         kfreebsd*-gnu) OS_ARCH=GNU_kFreeBSD OS_TARGET=GNU_kFreeBSD ;;
         gnu*)         OS_ARCH=GNU ;;
         solaris*)     OS_ARCH=SunOS OS_RELEASE=5 ;;
-        mingw*)       OS_ARCH=WINNT ;;
+        mingw*)       OS_ARCH=WINNT OS_TARGET=WINNT ;;
         darwin*)      OS_ARCH=Darwin OS_TARGET=Darwin ;;
     esac
     case "${target}" in
diff --git a/js/src/configure.in b/js/src/configure.in
index f8ce401ebff5..34d57e12f6d4 100644
--- a/js/src/configure.in
+++ b/js/src/configure.in
@@ -1263,7 +1263,7 @@ if test -n "$CROSS_COMPILE"; then
         kfreebsd*-gnu) OS_ARCH=GNU_kFreeBSD OS_TARGET=GNU_kFreeBSD ;;
         gnu*)         OS_ARCH=GNU ;;
         solaris*)     OS_ARCH=SunOS OS_RELEASE=5 ;;
-        mingw*)       OS_ARCH=WINNT ;;
+        mingw*)       OS_ARCH=WINNT OS_TARGET=WINNT ;;
         darwin*)      OS_ARCH=Darwin OS_TARGET=Darwin ;;
     esac
     case "${target}" in