diff --git a/src/tools/jam/Jambase b/src/tools/jam/Jambase
index 4a8b94e0ef..b65642ab92 100644
--- a/src/tools/jam/Jambase
+++ b/src/tools/jam/Jambase
@@ -366,7 +366,7 @@ else if $(MAC)
 	SUFLIB		?= .lib ;
 	SUFOBJ		?= .o ;
 }
-else if $(OS) = BEOS && $(METROWERKS)
+else if $(OS) = BEOS && $(OSPLAT) = PPC
 {
 	AR		?= mwld -xml -o ;
 	BINDIR		?= /boot/home/config/bin ;
diff --git a/src/tools/jam/Makefile b/src/tools/jam/Makefile
index 0a66be2fe6..6aa3d20a32 100644
--- a/src/tools/jam/Makefile
+++ b/src/tools/jam/Makefile
@@ -29,15 +29,6 @@ CFLAGS =
 #CFLAGS = -DNT 
 #TARGET = /Fejam0
 
-# BeOS - Metroworks CodeWarrior
-#CC = mwcc
-#Include = /NewDisk/develop/headers/posix
-#CFLAGS = -I $(Include)
-
-# BeOS - gcc
-#CC = gcc
-#LINKLIBS = -lnet
-
 # Interix - gcc
 #CC = gcc
 
diff --git a/src/tools/jam/jam.h b/src/tools/jam/jam.h
index 86be7a5015..d309b67d6e 100644
--- a/src/tools/jam/jam.h
+++ b/src/tools/jam/jam.h
@@ -393,6 +393,7 @@
      defined( PPC ) || \
      defined( ppc ) || \
      defined( __powerpc__ ) || \
+     defined( __POWERPC__ ) || \
      defined( __ppc__ )
 # define OSPLAT "OSPLAT=PPC"
 # endif
diff --git a/src/tools/jam/jambase.c b/src/tools/jam/jambase.c
index 4f8e0efc27..d036048ca7 100644
--- a/src/tools/jam/jambase.c
+++ b/src/tools/jam/jambase.c
@@ -185,7 +185,7 @@ char *jambase[] = {
 "SUFLIB		?= .lib ;\n",
 "SUFOBJ		?= .o ;\n",
 "}\n",
-"else if $(OS) = BEOS && $(METROWERKS)\n",
+"else if $(OS) = BEOS && $(OSPLAT) = PPC\n",
 "{\n",
 "AR		?= mwld -xml -o ;\n",
 "BINDIR		?= /boot/home/config/bin ;\n",