diff --git a/src/kernel/service/memorySyscalls.c b/src/kernel/service/memorySyscalls.c
index 432ef0c..a7c2ab2 100644
--- a/src/kernel/service/memorySyscalls.c
+++ b/src/kernel/service/memorySyscalls.c
@@ -26,6 +26,7 @@
         uint32_t physicalPage = PAGE_ID(physical);
         reservePagesCount(kernelPhysicalPages, physicalPage, pageCount);
         for (uint32_t i = 0; i < pageCount; i++) {
+            // the program probably wants to interact with an external device, so set the volatile flag
             mapPage(&service->pagingInfo, ADDRESS(physicalPage + i),
                     ADDRESS(virtualStart + i), true, true);
         }

diff --git a/src/kernel/service/memorySyscalls.c b/src/kernel/service/memorySyscalls.c
index 432ef0c..a7c2ab2 100644
--- a/src/kernel/service/memorySyscalls.c
+++ b/src/kernel/service/memorySyscalls.c
@@ -26,6 +26,7 @@
         uint32_t physicalPage = PAGE_ID(physical);
         reservePagesCount(kernelPhysicalPages, physicalPage, pageCount);
         for (uint32_t i = 0; i < pageCount; i++) {
+            // the program probably wants to interact with an external device, so set the volatile flag
             mapPage(&service->pagingInfo, ADDRESS(physicalPage + i),
                     ADDRESS(virtualStart + i), true, true);
         }
diff --git a/src/kernel/service/service.c b/src/kernel/service/service.c
index 41784cd..23b222b 100644
--- a/src/kernel/service/service.c
+++ b/src/kernel/service/service.c
@@ -34,7 +34,9 @@
     service->pagingInfo.pageDirectory = malloc(0x1000);
     service->name = serviceName;
     service->nameHash = insertString(serviceName);
+    // TODO: better ids
     service->id = listCount(services);
+    // fire load event
     fireEvent(loadInitrdEvent, service->nameHash, 0);
     void *current = &functionsStart;
     if (hlib) {
@@ -49,6 +51,8 @@
         sharePage(&(service->pagingInfo), current, current);
         current += 0x1000;
     }
+    // reserve first few pages to hopefully catch NULL pointers correctly
+    reservePagesCount(&service->pagingInfo, 0, 0x10);
     for (uint32_t i = 0; i < header->programHeaderEntryCount; i++) {
         if (hlib && programHeader->virtualAddress >= 0xF0000000) {
             goto end;
@@ -93,7 +97,6 @@
             return service;
         }
     })
-        ;
     return NULL;
 }
 
@@ -103,7 +106,6 @@
             return provider;
         }
     })
-        ;
     return NULL;
 }