diff --git a/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/ArrayFetchAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/ArrayFetchAnalyzer.php
index a00940fe5..bf728e98b 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/ArrayFetchAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/ArrayFetchAnalyzer.php
@@ -1245,7 +1245,7 @@ class ArrayFetchAnalyzer
                     ) {
                         // do nothing
                     }
-                } else {
+                } elseif (!$context->inside_isset) {
                     if (IssueBuffer::accepts(
                         new PossiblyInvalidArrayAccess(
                             'Cannot access array value on non-array variable ' .