diff --git a/Source/msg.cpp b/Source/msg.cpp
index 662f3855c..888028bf9 100644
--- a/Source/msg.cpp
+++ b/Source/msg.cpp
@@ -55,7 +55,7 @@ TMegaPkt *msg_get_next_packet()
 {
 	TMegaPkt *result;
 
-	sgpCurrPkt = (TMegaPkt *)DiabloAllocPtr(TMEGAPKT_SIZE);
+	sgpCurrPkt = (TMegaPkt *)DiabloAllocPtr(sizeof(TMegaPkt));
 	sgpCurrPkt->pNext = NULL;
 	sgpCurrPkt->dwSpaceLeft = 32000;
 
diff --git a/structs.h b/structs.h
index 0191eb723..377b575f1 100644
--- a/structs.h
+++ b/structs.h
@@ -962,7 +962,6 @@ typedef struct TMegaPkt {
 	BYTE data[32000];
 } TMegaPkt;
 #pragma pack(pop)
-#define TMEGAPKT_SIZE sizeof(TMegaPkt)
 
 typedef struct TBuffer {
 	DWORD dwNextWriteOffset;