diff --git a/code/modules/power/apc.dm b/code/modules/power/apc.dm
index ba2bf2a7e7..a1811e496c 100644
--- a/code/modules/power/apc.dm
+++ b/code/modules/power/apc.dm
@@ -625,7 +625,7 @@
 			qdel(W)
 			stat &= ~BROKEN
 			// Malf AI, removes the APC from AI's hacked APCs list.
-			if(hacker && hacker.hacked_apcs && src in hacker.hacked_apcs)
+			if(hacker && hacker.hacked_apcs && (src in hacker.hacked_apcs))
 				hacker.hacked_apcs -= src
 				hacker = null
 			if (opened==2)