diff --git a/src/Processor/Backtrace.php b/src/Processor/Backtrace.php
index e827bbfc..9a3cacb2 100644
--- a/src/Processor/Backtrace.php
+++ b/src/Processor/Backtrace.php
@@ -66,11 +66,11 @@ public function process(array $event)
      */
     protected function getBacktrace()
     {
-        if (version_compare(PHP_VERSION, '5.4.0') >= 0) {
+        if (PHP_VERSION_ID >= 50400) {
             return debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, $this->traceLimit);
         }
 
-        if (version_compare(PHP_VERSION, '5.3.6') >= 0) {
+        if (PHP_VERSION_ID >= 50306) {
             return debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
         }
 
diff --git a/src/Processor/RequestId.php b/src/Processor/RequestId.php
index 61520b21..5cfcb927 100644
--- a/src/Processor/RequestId.php
+++ b/src/Processor/RequestId.php
@@ -49,7 +49,7 @@ protected function getIdentifier()
             return $this->identifier;
         }
 
-        $requestTime = (version_compare(PHP_VERSION, '5.4.0') >= 0)
+        $requestTime = (PHP_VERSION_ID >= 50400)
                      ? $_SERVER['REQUEST_TIME_FLOAT']
                      : $_SERVER['REQUEST_TIME'];