diff --git a/src/smc/generators/CCodeGenerator.java b/src/smc/generators/CCodeGenerator.java
index ab1ed71..d7eb275 100644
--- a/src/smc/generators/CCodeGenerator.java
+++ b/src/smc/generators/CCodeGenerator.java
@@ -27,9 +27,14 @@ public void writeFiles() throws IOException {
       for (CNestedSwitchCaseImplementer.Error error : implementer.getErrors())
         System.out.println("Implementation error: " + error.name());
     } else {
-      String fileName = optimizedStateMachine.header.fsm.toLowerCase();
+      String fileName = toLowerCamelCase(optimizedStateMachine.header.fsm);
       Files.write(getOutputPath(fileName + ".h"), implementer.getFsmHeader().getBytes());
       Files.write(getOutputPath(fileName + ".c"), implementer.getFsmImplementation().getBytes());
     }
   }
+
+  static private String toLowerCamelCase(String s) {
+    if (s.length() < 2) return s.toLowerCase();
+    return s.substring(0, 1).toLowerCase() + s.substring(1);
+  }
 }
diff --git a/src/smc/implementers/CNestedSwitchCaseImplementer.java b/src/smc/implementers/CNestedSwitchCaseImplementer.java
index 92cfc41..80041b2 100644
--- a/src/smc/implementers/CNestedSwitchCaseImplementer.java
+++ b/src/smc/implementers/CNestedSwitchCaseImplementer.java
@@ -80,8 +80,8 @@ public void visit(FSMClassNode fsmClassNode) {
     fsmName = fsmClassNode.className;
 
     fsmImplementation += "#include <stdlib.h>\n";
-    fsmImplementation += String.format("#include \"%s.h\"\n", actionsName);
-    fsmImplementation += String.format("#include \"%s.h\"\n\n", fsmName);
+    fsmImplementation += String.format("#include \"%s.h\"\n", toLowerCamelCase(actionsName));
+    fsmImplementation += String.format("#include \"%s.h\"\n\n", toLowerCamelCase(fsmName));
     fsmClassNode.eventEnum.accept(this);
     fsmClassNode.stateEnum.accept(this);
 
@@ -142,4 +142,9 @@ public List<Error> getErrors() {
   }
 
   public enum Error {NO_ACTION}
+
+  static private String toLowerCamelCase(String s) {
+    if (s.length() < 2) return s.toLowerCase();
+    return s.substring(0, 1).toLowerCase() + s.substring(1);
+  }
 }