diff --git a/dev-ml/num/files/num-1.4-ocamlopt.patch b/dev-ml/num/files/num-1.4-ocamlopt.patch
new file mode 100644
index 0000000000000..90699b99474c5
--- /dev/null
+++ b/dev-ml/num/files/num-1.4-ocamlopt.patch
@@ -0,0 +1,15 @@
+--- a/src/Makefile	2022-01-12 19:58:54.655901110 +0100
++++ b/src/Makefile	2022-01-12 19:59:25.446339664 +0100
+@@ -33,11 +33,10 @@
+ 
+ all:: libnums.$(A) nums.cma
+ 
++ifeq "$(NATDYNLINK)" "true"
+ ifneq "$(ARCH)" "none"
+ all:: nums.cmxa
+ endif
+-
+-ifeq "$(NATDYNLINK)" "true"
+ all:: nums.cmxs
+ endif
+ 
diff --git a/dev-ml/num/num-1.4-r3.ebuild b/dev-ml/num/num-1.4-r3.ebuild
index 4b0101e0e90f1..6440704457e1a 100644
--- a/dev-ml/num/num-1.4-r3.ebuild
+++ b/dev-ml/num/num-1.4-r3.ebuild
@@ -19,6 +19,8 @@ RDEPEND="dev-lang/ocaml:=[ocamlopt?]"
 BDEPEND="${RDEPEND}"
 DEPEND="dev-ml/findlib:=[ocamlopt?]"
 
+PATCHES=( "${FILESDIR}"/${P}-ocamlopt.patch )
+
 src_compile() {
 	emake CFLAGS="${CFLAGS}" NATDYNLINK="$(usex ocamlopt true false)"
 }