diff --git a/Tactical/Weapons.h b/Tactical/Weapons.h
index a36c3390..4080969c 100644
--- a/Tactical/Weapons.h
+++ b/Tactical/Weapons.h
@@ -299,7 +299,7 @@ typedef struct
 	UINT8		ubVolatility;		// maximum chance of accidental explosion
 	UINT8		ubAnimationID;	// Animation enum to use
 	UINT32		uiIndex;
-	UINT16		ubDuration;	
+	UINT8		ubDuration;	
 	UINT8		ubStartRadius;	
 } EXPLOSIVETYPE;
 
diff --git a/Tactical/XML_Explosive.cpp b/Tactical/XML_Explosive.cpp
index d3ecb70b..8aba8a19 100644
--- a/Tactical/XML_Explosive.cpp
+++ b/Tactical/XML_Explosive.cpp
@@ -187,7 +187,7 @@ explosiveEndElementHandle(void *userData, const char *name)
 		else if(strcmp(name, "ubDuration") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curExplosive.ubDuration   = (UINT16) atol(pData->szCharData);
+			pData->curExplosive.ubDuration   = (UINT8) atol(pData->szCharData);
 		}
 
 		pData->maxReadDepth--;
diff --git a/TileEngine/LightEffects.cpp b/TileEngine/LightEffects.cpp
index ad9d056b..fcde0556 100644
--- a/TileEngine/LightEffects.cpp
+++ b/TileEngine/LightEffects.cpp
@@ -96,7 +96,7 @@ void UpdateLightingSprite( LIGHTEFFECT *pLight )
 }
 
 
-INT32 NewLightEffect( INT16 sGridNo, UINT16 ubDuration, UINT8 ubStartRadius )
+INT32 NewLightEffect( INT16 sGridNo, UINT8 ubDuration, UINT8 ubStartRadius )
 {		
 	LIGHTEFFECT *pLight;
 	INT32				iLightIndex;
diff --git a/TileEngine/LightEffects.h b/TileEngine/LightEffects.h
index dd95f85c..23bac323 100644
--- a/TileEngine/LightEffects.h
+++ b/TileEngine/LightEffects.h
@@ -15,9 +15,9 @@ typedef struct
 {
 	INT16		sGridNo;          // gridno at which the tear gas cloud is centered
 
-	UINT16		ubDuration;		       // the number of turns will remain effective
+	UINT8		ubDuration;		       // the number of turns will remain effective
 	UINT8		bRadius;	          // the current radius
-	UINT16			bAge;				        // the number of turns light has been around
+	UINT8			bAge;				        // the number of turns light has been around
 	BOOLEAN	fAllocated;
 	INT32		iLight;
 	UINT32	uiTimeOfLastUpdate;
diff --git a/TileEngine/SmokeEffects.h b/TileEngine/SmokeEffects.h
index 8ad1e135..07d1036e 100644
--- a/TileEngine/SmokeEffects.h
+++ b/TileEngine/SmokeEffects.h
@@ -22,10 +22,10 @@ typedef struct TAG_SMOKE_EFFECT
 {
 	INT16		sGridNo;          // gridno at which the tear gas cloud is centered
 
-	UINT16		ubDuration;        // the number of turns gas will remain effective
+	UINT8		ubDuration;        // the number of turns gas will remain effective
 	UINT8		ubRadius;          // the current radius of the cloud in map tiles
 	UINT8   bFlags;            // 0 - outdoors (fast spread), 1 - indoors (slow)
-	UINT16		bAge;             // the number of turns gas has been around
+	UINT8		bAge;             // the number of turns gas has been around
 	BOOLEAN	fAllocated;
 	INT8		bType;
 	UINT16	usItem;