diff --git a/configure b/configure
index 6a4a558..3f99074 100755
--- a/configure
+++ b/configure
@@ -514,7 +514,10 @@ fi
 
 # dbm?
 
-if [ -f "${ocaml_core_stdlib}/dbm.cmi" ]; then
+if [ -f "${ocaml_sitelib}/dbm/META" ]; then
+    echo "dbm: package already present"
+    ldbm=""
+elif [ -f "${ocaml_core_stdlib}/dbm.cmi" ]; then
     echo "dbm: found"
     ldbm="dbm"
 else
@@ -524,8 +527,12 @@ fi
 
 # num?
 
-if [ -f "${ocaml_core_stdlib}/num.cmi" ]; then
-    echo "num: found"
+if [ -f "${ocaml_sitelib}/num/META" ]; then
+    echo "num: package already present"
+    lnum=""
+    numtop=""
+elif [ -f "${ocaml_core_stdlib}/num.cmi" ]; then
+    echo "num: found but not as package"
     lnum="num num-top"
     numtop="num-top"
 else
diff --git a/doc/README.xml b/doc/README.xml
index 248483e..0b2b3b5 100644
--- a/doc/README.xml
+++ b/doc/README.xml
@@ -110,6 +110,11 @@ configuration files, and library routines in detail.</p>
     <ul>
 
     <li>
+      <p><em>git version:</em> Fix reinstallation of "num" for OCaml-4.06.
+      </p>
+    </li>
+      
+    <li>
       <p><em>1.7.3:</em> Fix regarding num-top: this library is now also
       optional, as num.</p>
     </li>