diff --git a/contrib/bobtoolz/bsploader.h b/contrib/bobtoolz/bsploader.h
index 7bee8fd0..2ca6a8a7 100644
--- a/contrib/bobtoolz/bsploader.h
+++ b/contrib/bobtoolz/bsploader.h
@@ -39,7 +39,7 @@ typedef struct {
 typedef struct {
 	int planeNum;
 	int children[2];            // negative numbers are -(leafs+1), not nodes
-	int mins[3];                // for frustom culling
+	int mins[3];                // for frustum culling
 	int maxs[3];
 } dnode_t;
 
diff --git a/tools/quake3/common/qfiles.h b/tools/quake3/common/qfiles.h
index d4affceb..75f558fc 100644
--- a/tools/quake3/common/qfiles.h
+++ b/tools/quake3/common/qfiles.h
@@ -402,7 +402,7 @@ typedef struct {
 	int contentFlags;
 } dshader_t;
 
-// planes x^1 is allways the opposite of plane x
+// planes x^1 is always the opposite of plane x
 
 typedef struct {
 	float normal[3];
@@ -412,7 +412,7 @@ typedef struct {
 typedef struct {
 	int planeNum;
 	int children[2];            // negative numbers are -(leafs+1), not nodes
-	int mins[3];                // for frustom culling
+	int mins[3];                // for frustum culling
 	int maxs[3];
 } dnode_t;
 
diff --git a/tools/quake3/q3data/images.c b/tools/quake3/q3data/images.c
index 6de25fdc..675a5359 100644
--- a/tools/quake3/q3data/images.c
+++ b/tools/quake3/q3data/images.c
@@ -260,7 +260,7 @@ void Cmd_Colormap( void ){
 			*lump_p++ = BestColor( red,green,blue, 1, 254 );
 		}
 
-		// fullbrights allways stay the same
+		// fullbrights always stay the same
 		for ( ; c < 256 ; c++ )
 			*lump_p++ = c;
 	}
diff --git a/tools/quake3/q3map2/map.c b/tools/quake3/q3map2/map.c
index 8e50519d..69e573ad 100644
--- a/tools/quake3/q3map2/map.c
+++ b/tools/quake3/q3map2/map.c
@@ -125,7 +125,7 @@ int CreateNewFloatPlane( vec3_t normal, vec_t dist ){
 
 	nummapplanes += 2;
 
-	// allways put axial planes facing positive first
+	// always put axial planes facing positive first
 	if ( p->type < 3 ) {
 		if ( p->normal[0] < 0 || p->normal[1] < 0 || p->normal[2] < 0 ) {
 			// flip order