diff --git a/Source/portable/MPLAB/PIC32MX/portmacro.h b/Source/portable/MPLAB/PIC32MX/portmacro.h
index 6f12cd8f7..f3d0a4106 100644
--- a/Source/portable/MPLAB/PIC32MX/portmacro.h
+++ b/Source/portable/MPLAB/PIC32MX/portmacro.h
@@ -87,7 +87,7 @@ extern "C" {
 
 /* Hardware specifics. */
 #define portBYTE_ALIGNMENT			4
-#define portSTACK_GROWTH			-4
+#define portSTACK_GROWTH			-1
 #define portTICK_RATE_MS			( ( portTickType ) 1000 / configTICK_RATE_HZ )		
 /*-----------------------------------------------------------*/