diff --git a/src/wp-includes/l10n/class-wp-translation-file.php b/src/wp-includes/l10n/class-wp-translation-file.php
index 93842bec10..f920ab1388 100644
--- a/src/wp-includes/l10n/class-wp-translation-file.php
+++ b/src/wp-includes/l10n/class-wp-translation-file.php
@@ -203,7 +203,24 @@ abstract class WP_Translation_File {
 			$this->parse_file();
 		}
 
-		return $this->entries[ $text ] ?? false;
+		if ( isset( $this->entries[ $text ] ) ) {
+			return $this->entries[ $text ];
+		}
+
+		/*
+		 * Handle cases where a pluralized string is only used as a singular one.
+		 * For example, when both __( 'Product' ) and _n( 'Product', 'Products' )
+		 * are used, the entry key will have the format "ProductNULProducts".
+		 * Fall back to looking up just "Product" to support this edge case.
+		 */
+		foreach( $this->entries as $key => $value ) {
+			if ( str_starts_with( $key, $text . "\0" ) ) {
+				$parts = explode( "\0", $value );
+				return $parts[0];
+			}
+		}
+
+		return false;
 	}
 
 	/**
diff --git a/tests/phpunit/data/l10n/example-simple.mo b/tests/phpunit/data/l10n/example-simple.mo
index 73fb5f21ab..cf39269a46 100644
Binary files a/tests/phpunit/data/l10n/example-simple.mo and b/tests/phpunit/data/l10n/example-simple.mo differ
diff --git a/tests/phpunit/data/l10n/example-simple.php b/tests/phpunit/data/l10n/example-simple.php
index e9c2f73ad6..4eb71d4405 100644
--- a/tests/phpunit/data/l10n/example-simple.php
+++ b/tests/phpunit/data/l10n/example-simple.php
@@ -6,5 +6,6 @@ return [
 			'contextoriginal with context' => ['translation with context'],
 			'plural0' . "\0" . 'plural1' => ['translation0', 'translation1'],
 			'contextplural0 with context' . "\0" . 'plural1 with context' => ['translation0 with context', 'translation1 with context'],
+			'Product' . "\0" . 'Products' => 'Produkt' . "\0" . 'Produkte',
 		],
 ];
diff --git a/tests/phpunit/data/l10n/example-simple.po b/tests/phpunit/data/l10n/example-simple.po
index b40fcda69b..9aff39e121 100644
--- a/tests/phpunit/data/l10n/example-simple.po
+++ b/tests/phpunit/data/l10n/example-simple.po
@@ -20,4 +20,7 @@ msgid_plural "plural1 with context"
 msgstr[0] "translation0 with context"
 msgstr[1] "translation1 with context"
 
-
+msgid "Product"
+msgid_plural "Products"
+msgstr[0] "Produkt"
+msgstr[1] "Produkte"
diff --git a/tests/phpunit/tests/l10n/wpTranslationsConvert.php b/tests/phpunit/tests/l10n/wpTranslationsConvert.php
index 8f3aa41c05..ea318eb329 100644
--- a/tests/phpunit/tests/l10n/wpTranslationsConvert.php
+++ b/tests/phpunit/tests/l10n/wpTranslationsConvert.php
@@ -173,6 +173,7 @@ class WP_Translation_Controller_Convert_Tests extends WP_UnitTestCase {
 	 * @covers ::translate_plural
 	 * @covers ::locate_translation
 	 * @covers ::get_files
+	 * @covers WP_Translation_File::translate
 	 *
 	 * @dataProvider data_simple_example_files
 	 *
@@ -198,6 +199,10 @@ class WP_Translation_Controller_Convert_Tests extends WP_UnitTestCase {
 		$this->assertSame( 'translation1 with context', $controller->translate_plural( array( 'plural0 with context', 'plural1 with context' ), 0, 'context', 'unittest' ) );
 		$this->assertSame( 'translation0 with context', $controller->translate_plural( array( 'plural0 with context', 'plural1 with context' ), 1, 'context', 'unittest' ) );
 		$this->assertSame( 'translation1 with context', $controller->translate_plural( array( 'plural0 with context', 'plural1 with context' ), 2, 'context', 'unittest' ) );
+
+		$this->assertSame( 'Produkt', $controller->translate( 'Product', '', 'unittest' ) );
+		$this->assertSame( 'Produkt', $controller->translate_plural( array( 'Product', 'Products' ), 1, '', 'unittest' ) );
+		$this->assertSame( 'Produkte', $controller->translate_plural( array( 'Product', 'Products' ), 2, '', 'unittest' ) );
 	}
 
 	/**