diff --git a/src/inc/cmdsys.plh b/src/inc/cmdsys.plh
index 7b311df..e476d19 100644
--- a/src/inc/cmdsys.plh
+++ b/src/inc/cmdsys.plh
@@ -55,8 +55,7 @@ import cmdsys
         byte jitsize
         byte refcons    // Apple /// specific
         byte devcons    // Apple /// specific
-        word jitc
-        word cmdparser
+        word cmdparser  // Apple /// specific
     end
     //
     // CMD exported functions
diff --git a/src/libsrc/apple/jit.pla b/src/libsrc/apple/jit.pla
index 6191d58..42e0898 100644
--- a/src/libsrc/apple/jit.pla
+++ b/src/libsrc/apple/jit.pla
@@ -46,5 +46,7 @@ if *jitcomp
 fin
 puts("JITC 1.0\n")
 *jitcomp = @compiler
+cmdsys.jitcount = 44
+cmdsys.jitsize  = 96
 return modkeep
 done
diff --git a/src/vmsrc/apple/cmdjit.pla b/src/vmsrc/apple/cmdjit.pla
index 74ff408..8e1ca57 100755
--- a/src/vmsrc/apple/cmdjit.pla
+++ b/src/vmsrc/apple/cmdjit.pla
@@ -58,8 +58,8 @@ word syspath
 word syscmdln
 word            = @execmod, @open, @close, @read, 0 // Mark write() as NULL
 byte perr
-byte jitcount   = 44
-byte jitsize    = 96
+byte jitcount   = 0
+byte jitsize    = 0
 //
 // Working input buffer overlayed with strings table
 //
@@ -1029,7 +1029,7 @@ def adddef(isfirst, addr, deflast)#1
     if not isfirst
         preventry = defentry - t_defentry
         defsize   = addr - preventry=>bytecodeaddr
-        if *jitcomp and defsize <= jitsize
+        if defsize <= jitsize // and *jitcomp
             preventry=>interpaddr   = $03D6    // JSR $03D6 (JIT INTERP)
             preventry->callcount    = jitcount // Set JIT countdown
             preventry->bytecodesize = defsize  // Set size
diff --git a/src/vmsrc/apple/soscmd.pla b/src/vmsrc/apple/soscmd.pla
index e0b5dac..dc3bcca 100755
--- a/src/vmsrc/apple/soscmd.pla
+++ b/src/vmsrc/apple/soscmd.pla
@@ -314,6 +314,8 @@ cmdsys:cmdparser = @shell
 // Install JIT compiler
 //
 puts("JITC 1.0\n")
-cmdsys:jitc = @compiler
-interpentry = compiler:interpaddr
+interpentry     = compiler:interpaddr
+*jitcomp        = @compiler
+cmdsys.jitcount = 44
+cmdsys.jitsize  = 96
 done
diff --git a/src/vmsrc/apple/sossys.pla b/src/vmsrc/apple/sossys.pla
index 10d338f..077efc6 100755
--- a/src/vmsrc/apple/sossys.pla
+++ b/src/vmsrc/apple/sossys.pla
@@ -45,11 +45,10 @@ word syspath
 word cmdlnptr
 word              = @execmod, @open, @close, @read, @write
 byte perr
-byte jitcount     = 45
-byte jitsize      = 96
+byte jitcount     = 0
+byte jitsize      = 0
 byte refcons      = 0
 byte devcons      = 0
-word jitcomp      = 0
 word cmdparser
 //
 // String pool.
@@ -1040,7 +1039,7 @@ def adddef(isfirst, ext, addr, deflast)#1
     if not isfirst
         preventry = defentry - t_defentry
         defsize   = addr - preventry=>bytecodeaddr
-        if *jitcomp and defsize <= jitsize
+        if defsize <= jitsize // and *jitcomp
             preventry=>interpaddr   = jitinterp // JSR JITINTRP
             preventry->callcount    = jitcount  // Set JIT countdown
             preventry->bytecodesize = defsize   // Set size