diff --git a/DTMultiExpressionPatch.m b/DTMultiExpressionPatch.m
index 97a84d5..9df162b 100644
--- a/DTMultiExpressionPatch.m
+++ b/DTMultiExpressionPatch.m
@@ -228,6 +228,7 @@ - (id)compileSourceOfType:(NSString *)sourceType
 					// @"line" key is the line number to highlight (starts at 1, not zero ... Dijkstra would be pissed...)
 					[errors setObject:[NSNumber numberWithUnsignedInt:lineNumber] forKey:@"line"];
 				}
+				[expr release];
 				continue;
 			}
 			
diff --git a/DTSampleHoldPatch.m b/DTSampleHoldPatch.m
index 008732d..2f14339 100644
--- a/DTSampleHoldPatch.m
+++ b/DTSampleHoldPatch.m
@@ -114,7 +114,7 @@ - (BOOL)setState:(NSDictionary*)state
 {
 	NSData *d = [state objectForKey:@"data"];
 	if(d)
-		self.priorValue = [[NSKeyedUnarchiver unarchiveObjectWithData:d] retain];
+		self.priorValue = [NSKeyedUnarchiver unarchiveObjectWithData:d];
 
 	return [super setState:state];
 }