diff --git a/dev-tcltk/blt/blt-2.5.3-r2.ebuild b/dev-tcltk/blt/blt-2.5.3-r2.ebuild
index 314e835ec9ad4..ea52ade048d14 100644
--- a/dev-tcltk/blt/blt-2.5.3-r2.ebuild
+++ b/dev-tcltk/blt/blt-2.5.3-r2.ebuild
@@ -56,6 +56,7 @@ PATCHES=(
 	"${FILESDIR}"/${P}-darwin.patch
 	"${FILESDIR}"/${P}-gbsd.patch
 	"${FILESDIR}"/${P}-lto.patch
+	"${FILESDIR}"/${P}-parallelMake.patch
 )
 
 src_prepare() {
diff --git a/dev-tcltk/blt/files/blt-2.5.3-parallelMake.patch b/dev-tcltk/blt/files/blt-2.5.3-parallelMake.patch
new file mode 100644
index 0000000000000..7bad79a75610b
--- /dev/null
+++ b/dev-tcltk/blt/files/blt-2.5.3-parallelMake.patch
@@ -0,0 +1,12 @@
+--- a/man/Makefile.in	2023-01-15 13:10:49.541445995 +0100
++++ b/man/Makefile.in	2023-01-15 13:11:44.483619553 +0100
+@@ -34,7 +34,8 @@
+ 
+ all: man.macros $(MANPAGES)
+ 
+-install: mkdirs install-mann install-man3
++install: mkdirs
++	$(MAKE) install-mann install-man3
+ 
+ install-mann: $(MAN_N)
+ 	for i in *.n ; do \