--- a/contrib/x265_8bit/module.defs
+++ b/contrib/x265_8bit/module.defs
@@ -15,6 +15,9 @@
 X265_8.CONFIGURE.static      =
 X265_8.CONFIGURE.shared      = -DENABLE_SHARED=OFF
 X265_8.CONFIGURE.extra       = -DENABLE_CLI=OFF -DHIGH_BIT_DEPTH=OFF -DEXTRA_LIB="x265_main10.a;x265_main12.a" -DEXTRA_LINK_FLAGS=-L. -DLINKED_10BIT=ON -DLINKED_12BIT=ON
+ifneq (x86_64,$(HOST.arch))
+    X265_8.CONFIGURE.extra += -DENABLE_ASSEMBLY=FALSE
+endif
 
 ifneq (1,$(FEATURE.numa))
     X265_8.CONFIGURE.extra  += -DENABLE_LIBNUMA=OFF
--- a/contrib/x265_10bit/module.defs
+++ b/contrib/x265_10bit/module.defs
@@ -18,6 +18,9 @@
 X265_10.CONFIGURE.static      =
 X265_10.CONFIGURE.shared      = -DENABLE_SHARED=OFF
 X265_10.CONFIGURE.extra       = -DENABLE_CLI=OFF -DHIGH_BIT_DEPTH=ON -DEXPORT_C_API=OFF
+ifneq (x86_64,$(HOST.arch))
+    X265_10.CONFIGURE.extra += -DENABLE_ASSEMBLY=FALSE
+endif
 
 ifneq (1,$(FEATURE.numa))
     X265_10.CONFIGURE.extra  += -DENABLE_LIBNUMA=OFF
--- a/contrib/x265_12bit/module.defs
+++ b/contrib/x265_12bit/module.defs
@@ -18,6 +18,9 @@
 X265_12.CONFIGURE.static      =
 X265_12.CONFIGURE.shared      = -DENABLE_SHARED=OFF
 X265_12.CONFIGURE.extra       = -DENABLE_CLI=OFF -DHIGH_BIT_DEPTH=ON -DEXPORT_C_API=OFF -DMAIN12=ON
+ifneq (x86_64,$(HOST.arch))
+    X265_12.CONFIGURE.extra += -DENABLE_ASSEMBLY=FALSE
+endif
 
 ifneq (1,$(FEATURE.numa))
     X265_12.CONFIGURE.extra  += -DENABLE_LIBNUMA=OFF