diff --git a/DOCS/client-api-changes.rst b/DOCS/client-api-changes.rst
index e48cda4fa0..ec2e3b87f9 100644
--- a/DOCS/client-api-changes.rst
+++ b/DOCS/client-api-changes.rst
@@ -32,6 +32,10 @@ API changes
 
 ::
 
+ --- mpv 0.39.0 ---
+ 2.4    - mpv_render_param with the MPV_RENDER_PARAM_ICC_PROFILE argument no
+          longer has incorrect assumptions about memory allocation and can be
+          correctly used.
  --- mpv 0.38.0 ---
  2.3    - partially revert the changes from API version 1.27, remove libmpv as
           the default VO and move it to the bottom of the auto-probing order.
diff --git a/osdep/mac/libmpv_helper.swift b/osdep/mac/libmpv_helper.swift
index e26d33edda..2884c141f3 100644
--- a/osdep/mac/libmpv_helper.swift
+++ b/osdep/mac/libmpv_helper.swift
@@ -146,8 +146,7 @@ class LibmpvHelper {
             guard let baseAddress = ptr.baseAddress, ptr.count > 0 else { return }
 
             let u8Ptr = baseAddress.assumingMemoryBound(to: UInt8.self)
-            let iccBstr = bstrdup(nil, bstr(start: u8Ptr, len: ptr.count))
-            var icc = mpv_byte_array(data: iccBstr.start, size: iccBstr.len)
+            var icc = mpv_byte_array(data: u8Ptr, size: ptr.count)
             withUnsafeMutableBytes(of: &icc) { (ptr: UnsafeMutableRawBufferPointer) in
                 let params = mpv_render_param(type: MPV_RENDER_PARAM_ICC_PROFILE, data: ptr.baseAddress)
                 mpv_render_context_set_parameter(mpvRenderContext, params)
diff --git a/video/out/gpu/libmpv_gpu.c b/video/out/gpu/libmpv_gpu.c
index 542db7f52c..0878fa00f1 100644
--- a/video/out/gpu/libmpv_gpu.c
+++ b/video/out/gpu/libmpv_gpu.c
@@ -107,7 +107,7 @@ static int set_parameter(struct render_backend *ctx, mpv_render_param param)
     switch (param.type) {
     case MPV_RENDER_PARAM_ICC_PROFILE: {
         mpv_byte_array *data = param.data;
-        gl_video_set_icc_profile(p->renderer, (bstr){data->data, data->size});
+        gl_video_set_icc_profile(p->renderer, bstrdup(NULL, (bstr){data->data, data->size}));
         return 0;
     }
     case MPV_RENDER_PARAM_AMBIENT_LIGHT: {