diff --git a/Ghidra/Processors/MIPS/data/languages/mips.sinc b/Ghidra/Processors/MIPS/data/languages/mips.sinc
index 18c86524bb..261a92bec4 100644
--- a/Ghidra/Processors/MIPS/data/languages/mips.sinc
+++ b/Ghidra/Processors/MIPS/data/languages/mips.sinc
@@ -539,8 +539,9 @@ define token instr(32)
     pcrel       = (19,20)
     pcrel2      = (18,20)
     cc          = (18,20)
-    immed1625   = (16,25) signed
-    immed1623   = (16,23) signed
+    immed1625   = (16,25)
+    simmed1625   = (16,25) signed
+    simmed1623   = (16,23) signed
     rt32        = (16,20)
     rt          = (16,20)
     rtmtdsp     = (16,20)
@@ -617,7 +618,7 @@ define token instr(32)
     spec2       = (9,10)
     svrs_s1     = (10,10)
     spec3       = (8,10)
-    simmed9     = (7,15)
+    simmed9     = (7,15) signed
     zero2       = (7,10)
     code        = (6,15)
     fdD         = (6,10)
@@ -650,7 +651,7 @@ define token instr(32)
     immed       = (0,15)
     simmed      = (0,15) signed
     simmseq     = (6,15) signed
-    simmed11    = (0,10)
+    simmed11    = (0,10) signed
 ;
 
 attach variables [ rs rt rd base index baser6 ] [ 
diff --git a/Ghidra/Processors/MIPS/data/languages/mips_dsp.sinc b/Ghidra/Processors/MIPS/data/languages/mips_dsp.sinc
index e4c183515c..86218e87ec 100644
--- a/Ghidra/Processors/MIPS/data/languages/mips_dsp.sinc
+++ b/Ghidra/Processors/MIPS/data/languages/mips_dsp.sinc
@@ -989,22 +989,22 @@ define pcodeop SUBUH.QB;
 	RD = DSPControl & immed1625:$(REGSIZE);
 }
 
-:rddsp RD	is $(AMODE) & prime=0x1f & immed1625=0x1f & RD & fct2=0x12 & fct=0x38 {
+:rddsp RD	is $(AMODE) & prime=0x1f & simmed1625=0x1f & RD & fct2=0x12 & fct=0x38 {
 	RD = DSPControl;
 }
 
 
 # REPL.PH	Purpose: Replicate Immediate Integer into all Vector Element Positions
-:repl.ph RD, immed1625	is $(AMODE) & prime=0x1f & immed1625 & RD & fct2=0xa & fct=0x12 {
-	val:2 = immed1625;
+:repl.ph RD, simmed1625	is $(AMODE) & prime=0x1f & simmed1625 & RD & fct2=0xa & fct=0x12 {
+	val:2 = simmed1625;
 	repl:$(REGSIZE) = sext(val) << 16 | zext(val);
 	RD = repl;
 }
 
 
 # REPL.QB	Purpose: Replicate Immediate Integer into all Vector Element Positions
-:repl.qb RD, immed1623	is $(AMODE) & prime=0x1f & zero2425=0x0 & immed1623 & RD & fct2=0x2 & fct=0x12 {
-	byte:1 = immed1623;
+:repl.qb RD, simmed1623	is $(AMODE) & prime=0x1f & zero2425=0x0 & simmed1623 & RD & fct2=0x2 & fct=0x12 {
+	byte:1 = simmed1623;
 	RD = sext((byte << 24) | (byte << 16) | (byte << 8) | (byte));
 }