diff --git a/src/platform/lm3s/platform_conf.h b/src/platform/lm3s/platform_conf.h
index 687b3bf8..ea950c8f 100644
--- a/src/platform/lm3s/platform_conf.h
+++ b/src/platform/lm3s/platform_conf.h
@@ -163,15 +163,15 @@
 //                                A, B, C, D, E, F, G, H, J
 
 #ifdef FORLM3S9B92
-  #define MEM_TOTAL ( 0x18000 )
+  #define SRAM_SIZE ( 0x18000 )
 #else
-  #define MEM_TOTAL ( 0x10000 )
+  #define SRAM_SIZE ( 0x10000 )
 #endif
 
 // Allocator data: define your free memory zones here in two arrays
 // (start address and end address)
 #define MEM_START_ADDRESS     { ( void* )end }
-#define MEM_END_ADDRESS       { ( void* )( SRAM_BASE + MEM_TOTAL - STACK_SIZE_TOTAL - 1 ) }
+#define MEM_END_ADDRESS       { ( void* )( SRAM_BASE + SRAM_SIZE - STACK_SIZE_TOTAL - 1 ) }
 
 // *****************************************************************************
 // CPU constants that should be exposed to the eLua "cpu" module
diff --git a/src/platform/lm3s/startup_gcc.c b/src/platform/lm3s/startup_gcc.c
index 3969faa1..35c94195 100644
--- a/src/platform/lm3s/startup_gcc.c
+++ b/src/platform/lm3s/startup_gcc.c
@@ -61,7 +61,7 @@ extern int main(void);
 __attribute__ ((section(".isr_vector")))
 void (* const g_pfnVectors[])(void) =
 {
-    (void (*) (void))( SRAM_BASE + MEM_TOTAL - STACK_SIZE_TOTAL ),
+    (void (*) (void))( SRAM_BASE + SRAM_SIZE ),
                                             // The initial stack pointer
     ResetISR,                               // The reset handler
     NmiSR,                                  // The NMI handler