diff --git a/src/configure b/src/configure
index 6fa2d1b4d16052ef4d484abaa2a13b7a6ce2b6a9..2e84b148cf0ee134239ab11f79d6ad743e765b40 100755
--- a/src/configure
+++ b/src/configure
@@ -2397,7 +2397,7 @@ enable_smallcons=no
 
 enable_gengc=no
 
-mkcldir="${prefix}/lib/mkcl-${PACKAGE_VERSION}"
+mkcldir="\${libdir}/mkcl-${PACKAGE_VERSION}"
 
 test -z "${docdir}" && docdir="${datadir}/doc/mkcl-${PACKAGE_VERSION}"
 
diff --git a/src/configure.in b/src/configure.in
index f3dee3fee04507596eee574ba9630b180e25442f..548bd5f794ad95f4a24105974eae4475efb8f7fe 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -265,8 +265,8 @@ enable_gengc=no
 
 dnl -----------------------------------------------------------------------
 dnl Installation directories
-dnl mkcldir="${libdir}/mkcl-${PACKAGE_VERSION}"
-mkcldir="${prefix}/lib/mkcl-${PACKAGE_VERSION}"
+mkcldir="\${libdir}/mkcl-${PACKAGE_VERSION}"
+dnl mkcldir='${prefix}/lib/mkcl-${PACKAGE_VERSION}'
 AC_SUBST([mkcldir])
 test -z "${docdir}" && docdir="${datadir}/doc/mkcl-${PACKAGE_VERSION}"
 AC_SUBST([docdir])
diff --git a/src/mkcl/config.h.in b/src/mkcl/config.h.in
index e7332ea40189f9482a76f2faa1a0a3181f8fe0b3..a4dbf4d1c34b32188d963de34551f55d048fb18b 100644
--- a/src/mkcl/config.h.in
+++ b/src/mkcl/config.h.in
@@ -57,7 +57,7 @@
 #define MKCL_MINOR_VERSION_STRING "@MKCL_MINOR_VERSION@"
 #define MKCL_PATCH_LEVEL_STRING "@MKCL_PATCH_LEVEL@"
 
-#define MKCL_SYS_LIBDIR_DEFAULT "@mkcldir@"
+#define MKCL_SYS_LIBDIR_DEFAULT "@prefix@/lib/mkcl-@PACKAGE_VERSION@"
 
 /*
  * FEATURES LINKED IN