diff --git a/src/configure b/src/configure
index 1ae6cb76b1..bd47681e8d 100755
--- a/src/configure
+++ b/src/configure
@@ -3697,7 +3697,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
   if test "$AS" = '' ; then
-    AS=as
+    AS="${ac_tool_prefix}as"
     as_was_set=no
   else
     as_was_set=yes
@@ -3800,7 +3800,7 @@ else
 fi
 
 if test "$AR" = '' ; then
-  AR=ar
+  AR="${ac_tool_prefix}ar"
 fi
 if test "$ARFLAGS" = '' ; then
   ARFLAGS=ruv
diff --git a/src/racket/configure.ac b/src/racket/configure.ac
index 5b2d6a3bf9..848a9c3bb1 100644
--- a/src/racket/configure.ac
+++ b/src/racket/configure.ac
@@ -440,7 +440,7 @@ if test "${enable_oskit}" = "no" ; then
   AC_PROG_CC
   AC_PROG_CPP
   if test "$AS" = '' ; then 
-    AS=as
+    AS="${ac_tool_prefix}as"
     as_was_set=no
   else
     as_was_set=yes
@@ -448,7 +448,7 @@ if test "${enable_oskit}" = "no" ; then
 fi
 AC_PROG_RANLIB
 if test "$AR" = '' ; then 
-  AR=ar
+  AR="${ac_tool_prefix}ar"
 fi
 if test "$ARFLAGS" = '' ; then 
   ARFLAGS=ruv