diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index eaea1d3b..db35c729 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -160,16 +160,6 @@ parameters:
 			count: 1
 			path: src/PhpSpreadsheet/Calculation/Calculation.php
 
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Calculation\\:\\:raiseFormulaError\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Calculation.php
-
-		-
-			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Calculation\\:\\:raiseFormulaError\\(\\) has parameter \\$errorMessage with no type specified\\.$#"
-			count: 1
-			path: src/PhpSpreadsheet/Calculation/Calculation.php
-
 		-
 			message: "#^Method PhpOffice\\\\PhpSpreadsheet\\\\Calculation\\\\Calculation\\:\\:validateBinaryOperand\\(\\) has no return type specified\\.$#"
 			count: 1
diff --git a/src/PhpSpreadsheet/Calculation/Calculation.php b/src/PhpSpreadsheet/Calculation/Calculation.php
index b473b27a..25f76959 100644
--- a/src/PhpSpreadsheet/Calculation/Calculation.php
+++ b/src/PhpSpreadsheet/Calculation/Calculation.php
@@ -5229,15 +5229,22 @@ class Calculation
         return $result;
     }
 
-    // trigger an error, but nicely, if need be
-    protected function raiseFormulaError($errorMessage)
+    /**
+     * Trigger an error, but nicely, if need be.
+     *
+     * @return false
+     */
+    protected function raiseFormulaError(string $errorMessage)
     {
         $this->formulaError = $errorMessage;
         $this->cyclicReferenceStack->clear();
         if (!$this->suppressFormulaErrors) {
             throw new Exception($errorMessage);
         }
-        trigger_error($errorMessage, E_USER_ERROR);
+
+        if (strlen($errorMessage) > 0) {
+            trigger_error($errorMessage, E_USER_ERROR);
+        }
 
         return false;
     }
diff --git a/tests/PhpSpreadsheetTests/Calculation/CalculationErrorTest.php b/tests/PhpSpreadsheetTests/Calculation/CalculationErrorTest.php
new file mode 100644
index 00000000..23ee5ba8
--- /dev/null
+++ b/tests/PhpSpreadsheetTests/Calculation/CalculationErrorTest.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Calculation;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
+use PhpOffice\PhpSpreadsheet\Calculation\Exception as CalcException;
+use PHPUnit\Framework\TestCase;
+use Throwable;
+
+class CalculationErrorTest extends TestCase
+{
+    public function testCalculationException(): void
+    {
+        $this->expectException(CalcException::class);
+        $this->expectExceptionMessage('Formula Error:');
+        $calculation = Calculation::getInstance();
+        $result = $calculation->_calculateFormulaValue('=SUM(');
+        self::assertFalse($result);
+    }
+
+    public function testCalculationError(): void
+    {
+        $calculation = Calculation::getInstance();
+        $calculation->suppressFormulaErrors = true;
+        $error = false;
+
+        try {
+            $calculation->_calculateFormulaValue('=SUM(');
+        } catch (Throwable $e) {
+            self::assertSame("Formula Error: Expecting ')'", $e->getMessage());
+            self::assertSame('PHPUnit\\Framework\\Error\\Error', get_class($e));
+            $error = true;
+        }
+        self::assertTrue($error);
+    }
+
+    /**
+     * @param mixed $args
+     */
+    public static function errhandler2(...$args): bool
+    {
+        return $args[0] === E_USER_ERROR;
+    }
+
+    public function testCalculationErrorTrulySuppressed(): void
+    {
+        $calculation = Calculation::getInstance();
+        $calculation->suppressFormulaErrors = true;
+        set_error_handler([self::class, 'errhandler2']);
+        $result = $calculation->_calculateFormulaValue('=SUM(');
+        restore_error_handler();
+        self::assertFalse($result);
+    }
+}