diff --git a/pigpio.c b/pigpio.c
index 87bd696..710d20f 100644
--- a/pigpio.c
+++ b/pigpio.c
@@ -6553,7 +6553,7 @@ static void *pthScript(void *x)
             PC, instr.p[0], p1o, instr.p[1], p2o, instr.p[2]);
          fflush(stderr);
 */
-         if (instr.p[0] < 100)
+         if (instr.p[0] < PI_CMD_SCRIPT)
          {
             if (instr.p[3])
             {
diff --git a/pigpio.h b/pigpio.h
index 15dd1c3..f81f9f9 100644
--- a/pigpio.h
+++ b/pigpio.h
@@ -31,7 +31,7 @@ For more information, please refer to <http://unlicense.org/>
 #include <stdint.h>
 #include <pthread.h>
 
-#define PIGPIO_VERSION 6602
+#define PIGPIO_VERSION 6603
 
 /*TEXT