diff --git a/srcpkgs/mozjs17/patches/mips.patch b/srcpkgs/mozjs17/patches/mips.patch
new file mode 100644
index 00000000000..f75a7eb19b1
--- /dev/null
+++ b/srcpkgs/mozjs17/patches/mips.patch
@@ -0,0 +1,18 @@
+--- js/src/assembler/assembler/MacroAssemblerMIPS.h	2013-02-11 23:33:22.000000000 +0100
++++ js/src/assembler/assembler/MacroAssemblerMIPS.h	2017-11-09 11:16:28.215891360 +0100
+@@ -2335,6 +2335,7 @@
+             m_assembler.lwc1(dest, addrTempRegister, address.offset);
+             m_assembler.lwc1(FPRegisterID(dest + 1), addrTempRegister, address.offset + 4);
+         } else {
++            /*
+                 sll     addrTemp, address.index, address.scale
+                 addu    addrTemp, addrTemp, address.base
+                 li      immTemp, address.offset
+@@ -2349,6 +2350,7 @@
+                              immTempRegister);
+             m_assembler.lwc1(dest, addrTempRegister, 0);
+             m_assembler.lwc1(FPRegisterID(dest + 1), addrTempRegister, 4);
++        }
+ #else
+         if (address.offset >= -32768 && address.offset <= 32767
+             && !m_fixedWidth) {