diff --git a/tests/Core/Ruleset/ShowSniffDeprecationsTest.php b/tests/Core/Ruleset/ShowSniffDeprecationsTest.php
index 8e81f96a25..43f850f051 100644
--- a/tests/Core/Ruleset/ShowSniffDeprecationsTest.php
+++ b/tests/Core/Ruleset/ShowSniffDeprecationsTest.php
@@ -146,7 +146,7 @@ public function testDeprecatedSniffsListDoesNotShowWhenSelectedSniffsAreNotDepre
         ];
         foreach ($sniffs as $sniffCode) {
             $parts     = explode('.', strtolower($sniffCode));
-            $sniffName = $parts[0].'\sniffs\\'.$parts[1].'\\'.$parts[2].'sniff';
+            $sniffName = $parts[0].'\\sniffs\\'.$parts[1].'\\'.$parts[2].'sniff';
             $restrictions[strtolower($sniffName)] = true;
         }
 
@@ -158,7 +158,7 @@ public function testDeprecatedSniffsListDoesNotShowWhenSelectedSniffsAreNotDepre
             $sniffFiles[] = $sniffFile;
         }
 
-        $ruleset->registerSniffs($allSniffs, $restrictions, []);
+        $ruleset->registerSniffs($sniffFiles, $restrictions, []);
         $ruleset->populateTokenListeners();
 
         $this->expectOutputString('');
@@ -195,7 +195,7 @@ public function testDeprecatedSniffsListDoesNotShowWhenAllDeprecatedSniffsAreExc
         ];
         foreach ($exclude as $sniffCode) {
             $parts     = explode('.', strtolower($sniffCode));
-            $sniffName = $parts[0].'\sniffs\\'.$parts[1].'\\'.$parts[2].'sniff';
+            $sniffName = $parts[0].'\\sniffs\\'.$parts[1].'\\'.$parts[2].'sniff';
             $exclusions[strtolower($sniffName)] = true;
         }
 
@@ -207,7 +207,7 @@ public function testDeprecatedSniffsListDoesNotShowWhenAllDeprecatedSniffsAreExc
             $sniffFiles[] = $sniffFile;
         }
 
-        $ruleset->registerSniffs($allSniffs, [], $exclusions);
+        $ruleset->registerSniffs($sniffFiles, [], $exclusions);
         $ruleset->populateTokenListeners();
 
         $this->expectOutputString('');