diff --git a/src/Type/Doctrine/Query/QueryResultTypeWalker.php b/src/Type/Doctrine/Query/QueryResultTypeWalker.php
index 55375c5f..1292ed8d 100644
--- a/src/Type/Doctrine/Query/QueryResultTypeWalker.php
+++ b/src/Type/Doctrine/Query/QueryResultTypeWalker.php
@@ -1261,7 +1261,19 @@ public function walkArithmeticFactor($factor): string
 		$primary = $factor->arithmeticPrimary;
 
 		$type = $this->unmarshalType($this->walkArithmeticPrimary($primary));
-		$type = TypeUtils::generalizeType($type, GeneralizePrecision::lessSpecific());
+
+		if ($type instanceof ConstantIntegerType && $factor->sign === false) {
+			$type = new ConstantIntegerType($type->getValue() * -1);
+
+		} elseif ($type instanceof IntegerRangeType && $factor->sign === false) {
+			$type = IntegerRangeType::fromInterval(
+				$type->getMax() === null ? null : $type->getMax() * -1,
+				$type->getMin() === null ? null : $type->getMin() * -1
+			);
+
+		} elseif ($type instanceof ConstantFloatType && $factor->sign === false) {
+			$type = new ConstantFloatType($type->getValue() * -1);
+		}
 
 		return $this->marshalType($type);
 	}
diff --git a/tests/Type/Doctrine/Query/QueryResultTypeWalkerTest.php b/tests/Type/Doctrine/Query/QueryResultTypeWalkerTest.php
index f2f349ed..e5e9aad9 100644
--- a/tests/Type/Doctrine/Query/QueryResultTypeWalkerTest.php
+++ b/tests/Type/Doctrine/Query/QueryResultTypeWalkerTest.php
@@ -82,6 +82,7 @@ public static function setUpBeforeClass(): void
 
 		$dataOne = [
 			'intColumn' => [1, 2],
+			'floatColumn' => [0.1, 2.0],
 			'stringColumn' => ['A', 'B'],
 			'stringNullColumn' => ['A', null],
 		];
@@ -108,10 +109,11 @@ public static function setUpBeforeClass(): void
 		$id = 1;
 
 		foreach (self::combinations($dataOne) as $combination) {
-			[$intColumn, $stringColumn, $stringNullColumn] = $combination;
+			[$intColumn, $floatColumn, $stringColumn, $stringNullColumn] = $combination;
 			$one = new One();
 			$one->id = (string) $id++;
 			$one->intColumn = $intColumn;
+			$one->floatColumn = $floatColumn;
 			$one->stringColumn = $stringColumn;
 			$one->stringNullColumn = $stringNullColumn;
 			$embedded = new Embedded();
@@ -1189,7 +1191,7 @@ public function getTestData(): iterable
 		yield 'arithmetic' => [
 			$this->constantArray([
 				[new ConstantStringType('intColumn'), new IntegerType()],
-				[new ConstantIntegerType(1), $this->intStringified()],
+				[new ConstantIntegerType(1), TypeCombinator::union(new ConstantIntegerType(1), new ConstantStringType('1'))],
 				[new ConstantIntegerType(2), $this->intStringified()],
 				[new ConstantIntegerType(3), TypeCombinator::addNull($this->intStringified())],
 				[new ConstantIntegerType(4), $this->intStringified()],
@@ -1614,6 +1616,20 @@ public function getTestData(): iterable
 				FROM		QueryResult\Entities\One o
 			',
 		];
+
+		yield 'unary minus' => [
+			$this->constantArray([
+				[new ConstantStringType('minusInt'), $this->numericStringOrInt()], // should be nullable
+				[new ConstantStringType('minusFloat'), TypeCombinator::union(new FloatType(), $this->numericStringOrInt())], // should be nullable && should not include int
+				[new ConstantStringType('minusIntRange'), TypeCombinator::union(IntegerRangeType::fromInterval(null, 0), $this->numericString())],
+			]),
+			'
+				SELECT		-o.intColumn as minusInt,
+							-o.floatColumn as minusFloat,
+							-COUNT(o.intColumn) as minusIntRange
+				FROM		QueryResult\Entities\One o
+			',
+		];
 	}
 
 	/**
diff --git a/tests/Type/Doctrine/data/QueryResult/Entities/One.php b/tests/Type/Doctrine/data/QueryResult/Entities/One.php
index 5605c945..81811618 100644
--- a/tests/Type/Doctrine/data/QueryResult/Entities/One.php
+++ b/tests/Type/Doctrine/data/QueryResult/Entities/One.php
@@ -31,6 +31,13 @@ class One
 	 */
 	public $intColumn;
 
+	/**
+	 * @Column(type="float")
+	 *
+	 * @var float
+	 */
+	public $floatColumn;
+
 	/**
 	 * @Column(type="string")
 	 *