diff --git a/ClassicalSharp/Entities/Model/BlockModel.cs b/ClassicalSharp/Entities/Model/BlockModel.cs
index 55711d234..fa281ca0d 100644
--- a/ClassicalSharp/Entities/Model/BlockModel.cs
+++ b/ClassicalSharp/Entities/Model/BlockModel.cs
@@ -34,10 +34,18 @@ namespace ClassicalSharp.Model {
 			float maxY = BlockInfo.MaxBB[block].Y;
 			return block == Block.Air ? 1 : (minY + maxY) / 2;
 		}
-		
+			
 		static Vector3 colShrink = new Vector3(0.75f/16, 0.75f/16, 0.75f/16);
 		public override Vector3 CollisionSize {
-			get { return (maxBB - minBB) - colShrink; } // to fit slightly inside
+			get {
+				// to fit slightly inside
+				Vector3 size = (maxBB - minBB) - colShrink;
+				// fix for 0 size blocks
+				size.X = Math.Max(size.X, 0.125f/16);
+				size.Y = Math.Max(size.Y, 0.125f/16);
+				size.Z = Math.Max(size.Z, 0.125f/16);
+				return size;
+			}
 		}
 		
 		static Vector3 offset = new Vector3(-0.5f, 0.0f, -0.5f);
diff --git a/src/ModelCache.c b/src/ModelCache.c
index 464252f0e..d8f243643 100644
--- a/src/ModelCache.c
+++ b/src/ModelCache.c
@@ -10,6 +10,7 @@
 #include "Stream.h"
 #include "ErrorHandler.h"
 #include "Entity.h"
+#include "Funcs.h"
 
 
 /*########################################################################################################################*
@@ -1113,6 +1114,10 @@ static void BlockModel_GetCollisionSize(Vector3* size) {
 	/* to fit slightly inside */
 	static Vector3 shrink = { 0.75f/16.0f, 0.75f/16.0f, 0.75f/16.0f };
 	Vector3_SubBy(size, &shrink);
+	/* fix for 0 size blocks */
+	size->X = max(size->X, 0.125f/16.0f);
+	size->Y = max(size->Y, 0.125f/16.0f);
+	size->Z = max(size->Z, 0.125f/16.0f);
 }
 
 static void BlockModel_GetPickingBounds(struct AABB* bb) {