diff --git a/srcpkgs/MultiMC/patches/be.patch b/srcpkgs/MultiMC/patches/be.patch
new file mode 100644
index 00000000000..6f81b879043
--- /dev/null
+++ b/srcpkgs/MultiMC/patches/be.patch
@@ -0,0 +1,37 @@
+Fixes build on big endian.
+
+--- libraries/classparser/src/javaendian.h
++++ libraries/classparser/src/javaendian.h
+@@ -11,32 +11,26 @@ inline uint64_t bigswap(uint64_t x)
+ {
+     return x;
+ }
+-;
+ inline uint32_t bigswap(uint32_t x)
+ {
+     return x;
+ }
+-;
+ inline uint16_t bigswap(uint16_t x)
+ {
+     return x;
+ }
+-;
+ inline int64_t bigswap(int64_t x)
+ {
+     return x;
+ }
+-;
+ inline int32_t bigswap(int32_t x)
+ {
+     return x;
+ }
+-;
+ inline int16_t bigswap(int16_t x)
+ {
+     return x;
+ }
+-;
+ #else
+ inline uint64_t bigswap(uint64_t x)
+ {