diff --git a/src/Metric.php b/src/Metric.php
index cd8c5f3..11a9570 100644
--- a/src/Metric.php
+++ b/src/Metric.php
@@ -159,6 +159,10 @@ public function register(): void
      */
     public function record(float $value, array $labels = []): void
     {
+        if (!$this->registered()) {
+            $this->setLabels(array_keys($labels));
+        }
+
         $this->register();
         $this->_record($value, $labels);
     }
diff --git a/tests/CounterTest.php b/tests/CounterTest.php
index d0ab8ea..0c2b79a 100644
--- a/tests/CounterTest.php
+++ b/tests/CounterTest.php
@@ -83,4 +83,46 @@ public function testRecord_success()
 
         $this->assertTrue($counter->registered());
     }
+
+    public function testRegRec_dynLabels()
+    {
+        $namespace   = 'test';
+        $name        = 'counter';
+        $description = 'hotdogs';
+        $labels      = ['foo' => 'bar'];
+        $value       = $this->randValue();
+
+        $phprom = $this->getMockBuilder(PHProm::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $phprom->expects($this->once())
+            ->method('registerCounter')
+            ->with(
+                $namespace,
+                $name,
+                $description,
+                array_keys($labels)
+            )
+            ->willReturn($this->randBool());
+
+        $phprom->expects($this->once())
+            ->method('recordCounter')
+            ->with(
+                $namespace,
+                $name,
+                $value,
+                $labels
+            )
+            ->willReturn($this->randBool());
+
+        $counter = (new Counter($phprom))
+            ->setNamespace($namespace)
+            ->setName($name)
+            ->setDescription($description);
+
+        $counter->record($value, $labels);
+
+        $this->assertTrue($counter->registered());
+    }
 }