diff --git a/fortran/config/rs6000-ibm-aix4.x b/fortran/config/rs6000-ibm-aix4.x
index bb2e2a79e3..462ca9c87b 100644
--- a/fortran/config/rs6000-ibm-aix4.x
+++ b/fortran/config/rs6000-ibm-aix4.x
@@ -33,7 +33,7 @@ if test "X-" = "X-$F9X"; then
 fi
 
 if test "X-" = "X-$f9x_flags_set"; then
-    FFLAGS="-static -O -qsuffix=f=f90 -qmoddir=$TMPDIR -I$TMPDIR -k"
+    FFLAGS="-static -O -qsuffix=f=f90 -qmoddir=. -I. -k"
     DEBUG_FFLAGS="-O"
     PROD_FFLAGS="-O"
     PROFILE_FFLAGS="-O"