diff --git a/mach/mips/as/instructions.dat b/mach/mips/as/instructions.dat
index 98c4dbbe9..10619f8b3 100644
--- a/mach/mips/as/instructions.dat
+++ b/mach/mips/as/instructions.dat
@@ -234,8 +234,8 @@
 010011<RS-><RT->00000<FD->001101 "suxc1" FD=fpr ',' RT=gpr '(' RS=gpr ')'
 111001<RS-><FT-><IMM-----------> "swc1" FT=fpr ',' IMM=e16 '(' RS=gpr ')'
 010011<RS-><RT->00000<FD->001000 "swxc1" FD=fpr ',' RT=gpr '(' RS=gpr ')'
-010001<F-->00000<FS-><FD->001001 "trunc" ".l" F=fmt FS=fpr ',' FD=fpr
-010001<F-->00000<FS-><FD->001101 "trunc" ".w" F=fmt FS=fpr ',' FD=fpr
+010001<F-->00000<FS-><FD->001001 "trunc" ".l" F=fmt FD=fpr ',' FS=fpr
+010001<F-->00000<FS-><FD->001101 "trunc" ".w" F=fmt FD=fpr ',' FS=fpr
 
 # Generic coprocessor instructions.
 
diff --git a/mach/mips/as/mach4.c b/mach/mips/as/mach4.c
index 443ca1e49..0befb2dc1 100644
--- a/mach/mips/as/mach4.c
+++ b/mach/mips/as/mach4.c
@@ -2,10 +2,12 @@
 	| OP_LI GPR ',' extabsexp
 	{
 		word_t reg = $2;
-		word_t val = $4;
+		uint32_t val = $4;
 
-		if ((val < -0x8000) || (val > 0xffff))
+		if (((int32_t)val >= -0x8000) && ((int32_t)val <= 0x7fff))
 			emit4(0x24000000 | (reg<<16) | (val & 0xffff)); /* addiu reg, zero, value */
+		else if (val <= 0xffff)
+			emit4(0x34000000 | (reg<<16) | val); /* ori reg, zero, value */
 		else
 		{
 			emit4(0x3c000000 | (reg<<16) | (val>>16)); /* lui reg, value */
@@ -16,7 +18,7 @@
 	{
 		word_t reg = $2;
 		word_t type = $4.typ & S_TYP;
-		word_t val = $4.val;
+		uint32_t val = $4.val;
 
 		if (type != S_ABS)
 			newrelo($4.typ, RELO2HI | FIXUPFLAGS);