diff --git a/src/WPConfigTransformer.php b/src/WPConfigTransformer.php
index 7957375..d6ba7b0 100644
--- a/src/WPConfigTransformer.php
+++ b/src/WPConfigTransformer.php
@@ -226,8 +226,19 @@ public function remove( $type, $name ) {
 			return false;
 		}
 
-		$pattern  = sprintf( '/(?<=^|;|<\?php\s|<\?\s)%s\s*(\S|$)/m', preg_quote( $this->wp_configs[ $type ][ $name ]['src'], '/' ) );
-		$contents = preg_replace( $pattern, '$1', $this->wp_config_src );
+		if ( 'constant' === $type ) {
+			$pattern = sprintf(
+				"/\bdefine\s*\(\s*['\"]%s['\"]\s*,\s*(('[^']*'|\"[^\"]*\")|\s*(?:[\s\S]*?))\s*\)\s*;\s*/mi",
+				preg_quote( $name, '/' )
+			);
+		} else {
+			$pattern = sprintf(
+				'/^\s*\$%s\s*=\s*[\s\S]*?;\s*$/mi',
+				preg_quote( $name, '/' )
+			);
+		}
+
+		$contents = preg_replace( $pattern, '', $this->wp_config_src );
 
 		return $this->save( $contents );
 	}
diff --git a/tests/AddRemoveTest.php b/tests/AddRemoveTest.php
index db1fcd8..3b3e6f1 100644
--- a/tests/AddRemoveTest.php
+++ b/tests/AddRemoveTest.php
@@ -142,6 +142,25 @@ public function testRemoveStringVariables() {
 		}
 	}
 
+	public function testRemoveConstantWithConcatenation() {
+		// Set up the initial state by defining a constant with concatenation
+		$name  = 'TEST_USER_PATH';
+		$value = "'/var/www/' . get_current_user()";
+		$this->assertTrue( self::$config_transformer->add( 'constant', $name, $value, array( 'raw' => true ) ), "Adding constant {$name}" );
+
+		// Define another constant to check if it remains untouched
+		$second_name  = 'TEST_THIS_AND';
+		$second_value = "md5('that')";
+		$this->assertTrue( self::$config_transformer->add( 'constant', $second_name, $second_value, array( 'raw' => true ) ), "Adding constant {$second_name}" );
+
+		// Remove the first constant and check the result
+		$this->assertTrue( self::$config_transformer->remove( 'constant', $name ), "Removing constant {$name}" );
+		$this->assertFalse( self::$config_transformer->exists( 'constant', $name ), "Check {$name} does not exist" );
+
+		// Ensure the second constant is still present after the removal
+		$this->assertTrue( self::$config_transformer->exists( 'constant', $second_name ), "Check {$second_name} still exists" );
+	}
+
 	public function testAddConstantNoPlacementAnchor() {
 		$this->expectException( Exception::class );
 		$this->expectExceptionMessage( 'Unable to locate placement anchor.' );