diff --git a/eZ/Publish/API/Repository/Tests/FieldType/FloatIntegrationTest.php b/eZ/Publish/API/Repository/Tests/FieldType/FloatIntegrationTest.php
index 98518a0ca5..42b960a787 100644
--- a/eZ/Publish/API/Repository/Tests/FieldType/FloatIntegrationTest.php
+++ b/eZ/Publish/API/Repository/Tests/FieldType/FloatIntegrationTest.php
@@ -351,10 +351,8 @@ protected function getValidSearchValueTwo()
         return 25.59;
     }
 
-    protected function getFullTextIndexedFieldData()
+    public function checkFullTextSupport(): bool
     {
-        return [
-            ['25.519', '25.59'],
-        ];
+        return false;
     }
 }
diff --git a/eZ/Publish/Core/FieldType/Float/Type.php b/eZ/Publish/Core/FieldType/Float/Type.php
index 8a7c700120..db85776115 100644
--- a/eZ/Publish/Core/FieldType/Float/Type.php
+++ b/eZ/Publish/Core/FieldType/Float/Type.php
@@ -219,10 +219,12 @@ protected function checkValueStructure(BaseValue $value)
 
     /**
      * {@inheritdoc}
+     *
+     * @param \eZ\Publish\Core\FieldType\Float\Value $value
      */
     protected function getSortInfo(BaseValue $value)
     {
-        return false;
+        return $value->value;
     }
 
     /**
@@ -256,4 +258,9 @@ public function toHash(SPIValue $value)
 
         return $value->value;
     }
+
+    public function isSearchable(): bool
+    {
+        return true;
+    }
 }
diff --git a/eZ/Publish/Core/Persistence/Legacy/Content/FieldValue/Converter/FloatConverter.php b/eZ/Publish/Core/Persistence/Legacy/Content/FieldValue/Converter/FloatConverter.php
index fb9a875599..4f4433af66 100644
--- a/eZ/Publish/Core/Persistence/Legacy/Content/FieldValue/Converter/FloatConverter.php
+++ b/eZ/Publish/Core/Persistence/Legacy/Content/FieldValue/Converter/FloatConverter.php
@@ -42,7 +42,7 @@ public static function create()
     public function toStorageValue(FieldValue $value, StorageFieldValue $storageFieldValue)
     {
         $storageFieldValue->dataFloat = $value->data;
-        $storageFieldValue->sortKeyInt = $value->sortKey;
+        $storageFieldValue->sortKeyString = $value->sortKey;
     }
 
     /**
@@ -54,7 +54,7 @@ public function toStorageValue(FieldValue $value, StorageFieldValue $storageFiel
     public function toFieldValue(StorageFieldValue $value, FieldValue $fieldValue)
     {
         $fieldValue->data = $value->dataFloat;
-        $fieldValue->sortKey = $value->sortKeyInt;
+        $fieldValue->sortKey = $value->sortKeyString;
     }
 
     /**
@@ -112,7 +112,7 @@ public function toFieldDefinition(StorageFieldDefinition $storageDef, FieldDefin
      */
     public function getIndexColumn()
     {
-        return 'sort_key_int';
+        return 'sort_key_string';
     }
 
     /**