diff --git a/gnu/packages/patches/xf86-video-mach64-bool-to-boolean.patch b/gnu/packages/patches/xf86-video-mach64-bool-to-boolean.patch
new file mode 100644
index 0000000000..b85acdd401
--- /dev/null
+++ b/gnu/packages/patches/xf86-video-mach64-bool-to-boolean.patch
@@ -0,0 +1,79 @@
+From ff1a69144735298d1a190fa23b3ae5747e914859 Mon Sep 17 00:00:00 2001
+From: Josselin Poiret <dev@jpoiret.xyz>
+Date: Thu, 18 Nov 2021 13:18:25 +0000
+Subject: [PATCH] Rename bool to boolean for OptionInfoRec.
+
+* src/aticonfig.c: Change uses of .value.bool to .value.boolean
+---
+ src/aticonfig.c | 38 +++++++++++++++++++-------------------
+ 1 file changed, 19 insertions(+), 19 deletions(-)
+
+diff --git a/src/aticonfig.c b/src/aticonfig.c
+index 621e79e..8ea0c6e 100644
+--- a/src/aticonfig.c
++++ b/src/aticonfig.c
+@@ -311,42 +311,42 @@ ATIProcessOptions
+ 
+     (void)memcpy(PublicOption, ATIPublicOptions, ATIPublicOptionSize);
+ 
+-#   define ProbeSparse   PublicOption[ATI_OPTION_PROBE_SPARSE].value.bool
+-#   define Accel         PublicOption[ATI_OPTION_ACCEL].value.bool
+-#   define BIOSDisplay   PrivateOption[ATI_OPTION_BIOS_DISPLAY].value.bool
+-#   define Blend         PrivateOption[ATI_OPTION_BLEND].value.bool
+-#   define CRTDisplay    PublicOption[ATI_OPTION_CRT_DISPLAY].value.bool
+-#   define CRTScreen     PrivateOption[ATI_OPTION_CRT_SCREEN].value.bool
+-#   define CSync         PublicOption[ATI_OPTION_CSYNC].value.bool
+-#   define Devel         PrivateOption[ATI_OPTION_DEVEL].value.bool
+-#   define HWCursor      PublicOption[ATI_OPTION_HWCURSOR].value.bool
++#   define ProbeSparse   PublicOption[ATI_OPTION_PROBE_SPARSE].value.boolean
++#   define Accel         PublicOption[ATI_OPTION_ACCEL].value.boolean
++#   define BIOSDisplay   PrivateOption[ATI_OPTION_BIOS_DISPLAY].value.boolean
++#   define Blend         PrivateOption[ATI_OPTION_BLEND].value.boolean
++#   define CRTDisplay    PublicOption[ATI_OPTION_CRT_DISPLAY].value.boolean
++#   define CRTScreen     PrivateOption[ATI_OPTION_CRT_SCREEN].value.boolean
++#   define CSync         PublicOption[ATI_OPTION_CSYNC].value.boolean
++#   define Devel         PrivateOption[ATI_OPTION_DEVEL].value.boolean
++#   define HWCursor      PublicOption[ATI_OPTION_HWCURSOR].value.boolean
+ 
+ #ifdef XF86DRI_DEVEL
+ 
+-#   define IsPCI       PublicOption[ATI_OPTION_IS_PCI].value.bool
++#   define IsPCI       PublicOption[ATI_OPTION_IS_PCI].value.boolean
+ #   define DMAMode     PublicOption[ATI_OPTION_DMA_MODE].value.str
+ #   define AGPMode     PublicOption[ATI_OPTION_AGP_MODE].value.num
+ #   define AGPSize     PublicOption[ATI_OPTION_AGP_SIZE].value.num
+-#   define LocalTex    PublicOption[ATI_OPTION_LOCAL_TEXTURES].value.bool
++#   define LocalTex    PublicOption[ATI_OPTION_LOCAL_TEXTURES].value.boolean
+ #   define BufferSize  PublicOption[ATI_OPTION_BUFFER_SIZE].value.num
+ 
+ #endif /* XF86DRI_DEVEL */
+ 
+ #ifdef TV_OUT
+ 
+-#   define TvOut        PublicOption[ATI_OPTION_TV_OUT].value.bool
++#   define TvOut        PublicOption[ATI_OPTION_TV_OUT].value.boolean
+ #   define TvStd        PublicOption[ATI_OPTION_TV_STD].value.str
+ 
+ #endif /* TV_OUT */
+ 
+-#   define CacheMMIO     PublicOption[ATI_OPTION_MMIO_CACHE].value.bool
+-#   define TestCacheMMIO PublicOption[ATI_OPTION_TEST_MMIO_CACHE].value.bool
+-#   define PanelDisplay  PublicOption[ATI_OPTION_PANEL_DISPLAY].value.bool
+-#   define ShadowFB      PublicOption[ATI_OPTION_SHADOW_FB].value.bool
+-#   define SWCursor      PublicOption[ATI_OPTION_SWCURSOR].value.bool
++#   define CacheMMIO     PublicOption[ATI_OPTION_MMIO_CACHE].value.boolean
++#   define TestCacheMMIO PublicOption[ATI_OPTION_TEST_MMIO_CACHE].value.boolean
++#   define PanelDisplay  PublicOption[ATI_OPTION_PANEL_DISPLAY].value.boolean
++#   define ShadowFB      PublicOption[ATI_OPTION_SHADOW_FB].value.boolean
++#   define SWCursor      PublicOption[ATI_OPTION_SWCURSOR].value.boolean
+ #   define AccelMethod   PublicOption[ATI_OPTION_ACCELMETHOD].value.str
+-#   define RenderAccel   PublicOption[ATI_OPTION_RENDER_ACCEL].value.bool
+-#   define LCDSync       PrivateOption[ATI_OPTION_LCDSYNC].value.bool
++#   define RenderAccel   PublicOption[ATI_OPTION_RENDER_ACCEL].value.boolean
++#   define LCDSync       PrivateOption[ATI_OPTION_LCDSYNC].value.boolean
+ 
+ #   define ReferenceClock \
+         PublicOption[ATI_OPTION_REFERENCE_CLOCK].value.freq.freq
+-- 
+2.33.1
+
diff --git a/gnu/packages/xorg.scm b/gnu/packages/xorg.scm
index 391a4d33d8..2740d34deb 100644
--- a/gnu/packages/xorg.scm
+++ b/gnu/packages/xorg.scm
@@ -3107,7 +3107,8 @@ (define-public xf86-video-mach64
         (sha256
           (base32
            "171wg8r6py1l138s58rlapin3rlpwsg9spmvhc7l68mm3g3hf1vs"))
-        (patches (search-patches "xf86-video-mach64-glibc-2.20.patch"))))
+        (patches (search-patches "xf86-video-mach64-glibc-2.20.patch"
+                                 "xf86-video-mach64-bool-to-boolean.patch"))))
     (build-system gnu-build-system)
     (inputs `(("mesa" ,mesa)
               ("xorgproto" ,xorgproto)
