diff --git a/aqua/mkconsole/Portfile b/aqua/mkconsole/Portfile
index 45468c6a4860..b7ed29a4dcbd 100644
--- a/aqua/mkconsole/Portfile
+++ b/aqua/mkconsole/Portfile
@@ -33,6 +33,10 @@ checksums           rmd160  c2e4e45824f3ca2d4a6676234150629169324429 \
                     sha256  0d458bbf5091bdd8258095f8666f8055ea16204163679593e126ded9b4cdbd54 \
                     size    109248
 
+# Backport, drop with next update.
+# See: https://github.com/mulle-kybernetik/mkconsole/issues/1
+patchfiles-append   2ed541237808b584962cb0ae7485ee3d31a1ca45.patch
+
 xcode.build.settings    CODE_SIGN_IDENTITY=
 xcode.destroot.settings CODE_SIGN_IDENTITY=
 
diff --git a/aqua/mkconsole/files/2ed541237808b584962cb0ae7485ee3d31a1ca45.patch b/aqua/mkconsole/files/2ed541237808b584962cb0ae7485ee3d31a1ca45.patch
new file mode 100644
index 000000000000..a03122a41eee
--- /dev/null
+++ b/aqua/mkconsole/files/2ed541237808b584962cb0ae7485ee3d31a1ca45.patch
@@ -0,0 +1,32 @@
+From 2ed541237808b584962cb0ae7485ee3d31a1ca45 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Marcus=20Mu=CC=88ller?= <znek@mulle-kybernetik.com>
+Date: Fri, 16 Aug 2024 16:38:32 +0200
+Subject: [PATCH] Fix build issues for macOS < 10.12
+
+---
+ MKConsoleWindow.m | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/MKConsoleWindow.m b/MKConsoleWindow.m
+index 6325289..26e5a54 100644
+--- MKConsoleWindow.m
++++ MKConsoleWindow.m
+@@ -46,9 +46,17 @@
+     @implementation MKConsoleWindow
+ //---------------------------------------------------------------------------------------
+ 
++// NOTE: can't use version macro(s) `MAC_OS_VERSION_12_0`/`__MAC_10_12` when
++// compiling on older platforms as it's undefined there - using its value
++// instead!
++#if (MAC_OS_X_VERSION_MAX_ALLOWED < 101200)
++#define NSWindowStyleMaskBorderless NSBorderlessWindowMask
++#define NSWindowStyleMask NSUInteger
++#endif
++
+ - (id)initWithContentRect:(NSRect)contentRect styleMask:(NSWindowStyleMask)styleMask backing:(NSBackingStoreType)backingType defer:(BOOL)flag
+ {
+-    self = [super initWithContentRect:contentRect styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:NO];
++    self = [super initWithContentRect:contentRect styleMask:NSWindowStyleMaskBorderless backing:NSBackingStoreBuffered defer:NO];
+     NSAssert1(self != nil, @"%s Failed to create window instance", __PRETTY_FUNCTION__);
+     return self;
+ }