diff --git a/include/process/event.hpp b/include/process/event.hpp
index 84a8790..cf728da 100644
--- a/include/process/event.hpp
+++ b/include/process/event.hpp
@@ -12,7 +12,7 @@
 namespace process {
 
 // Forward declarations.
-struct ProcessBase;
+class ProcessBase;
 struct MessageEvent;
 struct DispatchEvent;
 struct HttpEvent;
diff --git a/src/process.cpp b/src/process.cpp
index 3ffe0b5..d68a524 100644
--- a/src/process.cpp
+++ b/src/process.cpp
@@ -1166,10 +1166,10 @@ void* schedule(void* arg)
       Gate::state_t old = gate->approach();
       process = process_manager->dequeue();
       if (process == NULL) {
-	gate->arrive(old); // Wait at gate if idle.
-	continue;
+        gate->arrive(old); // Wait at gate if idle.
+        continue;
       } else {
-	gate->leave();
+        gate->leave();
       }
     }
     process_manager->resume(process);