diff --git a/src/Psalm/Internal/Codebase/TaintFlowGraph.php b/src/Psalm/Internal/Codebase/TaintFlowGraph.php
index acbfd8259..e3df24071 100644
--- a/src/Psalm/Internal/Codebase/TaintFlowGraph.php
+++ b/src/Psalm/Internal/Codebase/TaintFlowGraph.php
@@ -222,7 +222,7 @@ class TaintFlowGraph extends DataFlowGraph
     /**
      * @param array<string> $source_taints
      * @param array<DataFlowNode> $sinks
-     * @return array<string, DataFlowNode>
+     * @return list<DataFlowNode>
      */
     private function getChildNodes(
         DataFlowNode $generated_source,
@@ -441,7 +441,7 @@ class TaintFlowGraph extends DataFlowGraph
             $new_destination->specialized_calls = $generated_source->specialized_calls;
             $new_destination->path_types = array_merge($generated_source->path_types, [$path_type]);
 
-            $new_sources[$to_id] = $new_destination;
+            $new_sources[] = $new_destination;
         }
 
         return $new_sources;
@@ -459,11 +459,10 @@ class TaintFlowGraph extends DataFlowGraph
         if ($source->specialization_key && isset($this->specialized_calls[$source->specialization_key])) {
             $generated_source = clone $source;
 
-            $generated_source->specialized_calls[$source->specialization_key]
-                = $this->specialized_calls[$source->specialization_key];
-
             $generated_source->id = substr($source->id, 0, -strlen($source->specialization_key) - 1);
 
+            $generated_source->specialized_calls[$source->specialization_key][$generated_source->id] = true;
+
             $generated_sources[] = $generated_source;
         } elseif (isset($this->specializations[$source->id])) {
             foreach ($this->specializations[$source->id] as $specialization => $_) {
diff --git a/tests/TaintTest.php b/tests/TaintTest.php
index fecd45855..a1c8b2ce5 100644
--- a/tests/TaintTest.php
+++ b/tests/TaintTest.php
@@ -1940,6 +1940,26 @@ class TaintTest extends TestCase
                     echo foo($_GET["foo"], false);',
                 'error_message' => 'TaintedHtml',
             ],
+            'suppressOneCatchAnother' => [
+                '<?php
+                    /** @psalm-taint-specialize */
+                    function data(array $data, string $key) {
+                        return $data[$key];
+                    }
+
+                    function get(string $key) {
+                        return data($_GET, $key);
+                    }
+
+                    function post(string $key) {
+                        return data($_POST, $key);
+                    }
+
+                    echo get("x");
+                    /** @psalm-suppress TaintedInput */
+                    echo post("x");',
+                'error_message' => 'TaintedHtml',
+            ],
             /*
             // TODO: Stubs do not support this type of inference even with $this->message = $message.
             // Most uses of getMessage() would be with caught exceptions, so this is not representative of real code.