diff --git a/depends/packages/zeromq.mk b/depends/packages/zeromq.mk
index 7620df54777..df018a10322 100644
--- a/depends/packages/zeromq.mk
+++ b/depends/packages/zeromq.mk
@@ -10,6 +10,7 @@ $(package)_patches += builtin_sha1.patch
 $(package)_patches += fix_have_windows.patch
 $(package)_patches += openbsd_kqueue_headers.patch
 $(package)_patches += cmake_minimum.patch
+$(package)_patches += cacheline_undefined.patch
 $(package)_patches += no_librt.patch
 
 define $(package)_set_vars
@@ -25,6 +26,7 @@ define $(package)_preprocess_cmds
   patch -p1 < $($(package)_patch_dir)/remove_libstd_link.patch && \
   patch -p1 < $($(package)_patch_dir)/macos_mktemp_check.patch && \
   patch -p1 < $($(package)_patch_dir)/builtin_sha1.patch && \
+  patch -p1 < $($(package)_patch_dir)/cacheline_undefined.patch && \
   patch -p1 < $($(package)_patch_dir)/fix_have_windows.patch && \
   patch -p1 < $($(package)_patch_dir)/openbsd_kqueue_headers.patch && \
   patch -p1 < $($(package)_patch_dir)/cmake_minimum.patch && \
diff --git a/depends/patches/zeromq/cacheline_undefined.patch b/depends/patches/zeromq/cacheline_undefined.patch
new file mode 100644
index 00000000000..02bd2a5fe5d
--- /dev/null
+++ b/depends/patches/zeromq/cacheline_undefined.patch
@@ -0,0 +1,15 @@
+Use proper STREQUAL instead of EQUAL to compare strings.txt
+
+See: https://github.com/zeromq/libzmq/pull/4711.
+
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -476,7 +476,7 @@ execute_process(
+ if(CACHELINE_SIZE STREQUAL ""
+    OR CACHELINE_SIZE EQUAL 0
+    OR CACHELINE_SIZE EQUAL -1
+-   OR CACHELINE_SIZE EQUAL "undefined")
++   OR CACHELINE_SIZE STREQUAL "undefined")
+   set(ZMQ_CACHELINE_SIZE 64)
+ else()
+   set(ZMQ_CACHELINE_SIZE ${CACHELINE_SIZE})