diff --git a/Defs.make b/Defs.make
index dbc0152b2c3..a0de6f5df9d 100644
--- a/Defs.make
+++ b/Defs.make
@@ -29,7 +29,7 @@ EE_ADDR2LINE = $(EE_TOOL_PREFIX)addr2line
 # Defintions for the IOP toolchain.
 #
 
-IOP_TOOL_PREFIX ?= iop-
+IOP_TOOL_PREFIX ?= mipsel-ps2-irx-
 IOP_CC = $(IOP_TOOL_PREFIX)gcc
 IOP_AS = $(IOP_TOOL_PREFIX)as
 IOP_LD = $(IOP_TOOL_PREFIX)ld
diff --git a/samples/Makefile.pref_sample b/samples/Makefile.pref_sample
index 60d780cf44b..f1a1d8f6334 100644
--- a/samples/Makefile.pref_sample
+++ b/samples/Makefile.pref_sample
@@ -20,7 +20,7 @@ EE_OBJCOPY = $(EE_PREFIX)objcopy
 EE_STRIP = $(EE_PREFIX)strip
 EE_ADDR2LINE = $(EE_PREFIX)addr2line
 
-IOP_PREFIX ?= iop-
+IOP_PREFIX ?= mipsel-ps2-irx-
 IOP_CC = $(IOP_PREFIX)gcc
 IOP_AS = $(IOP_PREFIX)as
 IOP_LD = $(IOP_PREFIX)ld