diff --git a/index.php b/index.php
index e975791..62fbdbf 100644
--- a/index.php
+++ b/index.php
@@ -134,7 +134,7 @@
 								return 'Unable to upload image, please contact the webmaster.';
 						}
 
-						if(!$spoiler) {
+						if($spoiler) {
 							$thumb_size = getimagesize(ASSETS_PATH . "spoiler.gif");
 						} else {
 							// Create thumbnail
@@ -491,7 +491,7 @@
 					<br />
 
 					<label for="spoiler">Spoiler:</label>
-					<input type="checkbox" id="spoiler" name="spoiler" />
+					<input type="checkbox" id="spoiler" name="spoiler" <?php if($spoiler) echo 'checked'; ?> />
 					<br />
 					<br />
 
@@ -531,7 +531,7 @@
 						</tr>
 						<tr>
 							<td><label for="spoiler">Spoiler:</label></td>
-							<td><input type="checkbox" id="spoiler" name="spoiler" /></td>
+							<td><input type="checkbox" id="spoiler" name="spoiler" <?php if($spoiler) echo 'checked'; ?> /></td>
 						</tr>
 						<tr>
 							<td><label for="captcha">CAPTCHA:</label></td>