diff --git a/viewer/scrollview.cpp b/viewer/scrollview.cpp
index b5bebb644e..275c57fcb7 100644
--- a/viewer/scrollview.cpp
+++ b/viewer/scrollview.cpp
@@ -44,7 +44,7 @@
 
 const int kSvPort = 8461;
 const int kMaxMsgSize = 4096;
-const int kMaxIntPairSize = 45;  // Holds %d,%d, for upto 64 bit.
+const int kMaxIntPairSize = 45;  // Holds %d,%d, for up to 64 bit.
 
 #include "svutil.h"
 
@@ -342,7 +342,7 @@ void* ScrollView::StartEventHandler(void* a) {
         k = i;
       }
     }
-    // If we didnt find anything we had an old alarm and just sleep again.
+    // If we didn't find anything we had an old alarm and just sleep again.
     if (new_event != NULL) {
       sv->event_table_[k] = NULL;
       sv->mutex_->Unlock();
diff --git a/viewer/scrollview.h b/viewer/scrollview.h
index fe099efcfd..12fac4e5db 100644
--- a/viewer/scrollview.h
+++ b/viewer/scrollview.h
@@ -327,7 +327,7 @@ class ScrollView {
 // be unique among menubar eventIDs.
   void MenuItem(const char* parent, const char* name, int cmdEvent);
 
-// This adds a new checkbox entry, which might initally be flagged.
+// This adds a new checkbox entry, which might initially be flagged.
   void MenuItem(const char* parent, const char* name,
                 int cmdEvent, bool flagged);