diff --git a/configure.in b/configure.in
index e960d1abc..a4fa62b52 100644
--- a/configure.in
+++ b/configure.in
@@ -35,7 +35,7 @@ AM_PROG_CC_C_O  # Needed for subdir-objects in AUTOMAKE_OPTIONS
 AC_COMPILE_WARNINGS # Increase warning levels
 
 AC_DEFINE_UNQUOTED(SWIG_CXX, ["$CXX"], [Compiler that built SWIG])
-AC_DEFINE_UNQUOTED(SWIG_PLATFORM, ["$build"], [Platform that SWIG is built for])
+AC_DEFINE_UNQUOTED(SWIG_PLATFORM, ["$host"], [Platform that SWIG is built for])
 
 dnl Checks for header files.
 AC_HEADER_STDC
@@ -2332,7 +2332,7 @@ AC_ARG_WITH(swiglibdir,[  --with-swiglibdir=DIR   Put SWIG system-independent li
 AC_SUBST(swig_lib)
 AC_DEFINE_DIR(SWIG_LIB, swig_lib, [Directory for SWIG system-independent libraries])
 
-case $host in
+case $build in
         # Windows does not understand unix directories. Convert into a windows directory with drive letter.
         *-*-mingw*) SWIG_LIB_WIN_UNIX=`cmd //c echo $SWIG_LIB | sed -e "s/[ ]*$//"`;; # This echo converts unix to mixed paths. Then zap unexpected trailing space.
         *-*-cygwin*) SWIG_LIB_WIN_UNIX=`cygpath --mixed "$SWIG_LIB"`;;