diff --git a/configure.ac b/configure.ac
index 7dc3ba1e90..6ecfb62e6b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,6 +20,7 @@ BITCOIN_TX_NAME=dash-tx
 BITCOIN_WALLET_TOOL_NAME=dash-wallet
 
 dnl Unless the user specified ARFLAGS, force it to be cr
+dnl This is also the default as-of libtool 2.4.7
 AC_ARG_VAR(ARFLAGS, [Flags for the archiver, defaults to <cr> if not set])
 if test "x${ARFLAGS+set}" != "xset"; then
   ARFLAGS="cr"
diff --git a/contrib/guix/manifest.scm b/contrib/guix/manifest.scm
index 54329023c5..1ba96be2e4 100644
--- a/contrib/guix/manifest.scm
+++ b/contrib/guix/manifest.scm
@@ -604,7 +604,7 @@ parse, modify and abstract ELF, PE and MachO formats.")
         (list zlib "static")
         ;; Build tools
         gnu-make
-        libtool
+        libtool-2.4.7
         autoconf-2.71
         automake
         pkg-config