diff --git a/configure.ac b/configure.ac
index 1279bf0..29abce6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -49,7 +49,6 @@ if [[ "$PYTHON_EXEC_PREFIX" != "$PYTHON_PREFIX" ]]; then
 fi
 PYTHON_LIBS="$PYTHON_LIBS -lpython${PYTHON_VERSION}${PYTHON_ABIFLAGS}"
 
-AC_SUBST(PYTHON)
 AC_SUBST(PYTHON_CFLAGS)
 AC_SUBST(PYTHON_LDFLAGS)
 AC_SUBST(PYTHON_LIBS)
diff --git a/src/Makefile.am b/src/Makefile.am
index b0cb98a..dd56d92 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -12,7 +12,9 @@ EXTRA_DIST = \
 	frida-trace.in \
 	frida-repl.in
 
-do_substitution = sed -e 's,[@]pythondir[@],$(pythondir),g' \
+do_substitution = sed \
+	-e 's,[@]PYTHON[@],$(PYTHON),g' \
+	-e 's,[@]pythondir[@],$(pythondir),g' \
 	-e 's,[@]PACKAGE[@],$(PACKAGE),g' \
 	-e 's,[@]VERSION[@],$(VERSION),g'