diff --git a/src/p_setup.c b/src/p_setup.c
index b0dd72996..45a5442ff 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -2162,6 +2162,30 @@ static void P_LoadReject(lumpnum_t lumpnum)
 		rejectmatrix = W_CacheLumpNum(lumpnum, PU_LEVEL);
 }
 
+// PK3 version
+// -- Monster Iestyn 09/01/18
+static void P_LoadRawReject(UINT8 *data, size_t count, const char *lumpname)
+{
+	// Check if the lump is named "REJECT"
+	if (!lumpname || memcmp(lumpname, "REJECT\0\0", 8) != 0)
+	{
+		rejectmatrix = NULL;
+		CONS_Debug(DBG_SETUP, "P_LoadRawReject: No valid REJECT lump found\n");
+		return;
+	}
+
+	if (!count) // zero length, someone probably used ZDBSP
+	{
+		rejectmatrix = NULL;
+		CONS_Debug(DBG_SETUP, "P_LoadRawReject: REJECT lump has size 0, will not be loaded\n");
+	}
+	else
+	{
+		rejectmatrix = Z_Malloc(count, PU_LEVEL, NULL); // allocate memory for the reject matrix
+		M_Memcpy(rejectmatrix, data, count); // copy the data into it
+	}
+}
+
 #if 0
 static char *levellumps[] =
 {
@@ -2848,7 +2872,10 @@ boolean P_SetupLevel(boolean skipprecip)
 		P_LoadRawSegs(wadData + (fileinfo + ML_SEGS)->filepos, (fileinfo + ML_SEGS)->size);
 		if (numlumps > ML_REJECT) // enough room for a REJECT lump at least
 		{
-			// placeholder
+			P_LoadRawReject(
+					wadData + (fileinfo + ML_REJECT)->filepos,
+					(fileinfo + ML_REJECT)->size,
+					(fileinfo + ML_REJECT)->name);
 		}
 
 		// Important: take care of the ordering of the next functions.