diff --git a/src/engine/client/gfx.cpp b/src/engine/client/gfx.cpp
index 657d92f00..ba908c68b 100644
--- a/src/engine/client/gfx.cpp
+++ b/src/engine/client/gfx.cpp
@@ -49,7 +49,7 @@ static const int MAX_TEXTURES = 128;
 static texture_holder textures[MAX_TEXTURES];
 static int first_free_texture;
 
-static const char null_texture_data[] = {
+static const unsigned char null_texture_data[] = {
 	0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0x00,0xff,0x00,0xff, 0x00,0xff,0x00,0xff, 
 	0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0x00,0xff,0x00,0xff, 0x00,0xff,0x00,0xff, 
 	0x00,0x00,0xff,0xff, 0x00,0x00,0xff,0xff, 0xff,0xff,0x00,0xff, 0xff,0xff,0x00,0xff, 
diff --git a/src/engine/datafile.cpp b/src/engine/datafile.cpp
index 789aa7226..5c0648193 100644
--- a/src/engine/datafile.cpp
+++ b/src/engine/datafile.cpp
@@ -68,7 +68,7 @@ datafile *datafile_load(const char *filename)
 	// TODO: change this header
 	int header[4];
 	file.read(header, sizeof(header));
-	if(((header[0]>>24)&0xff) != 'D' || ((header[0]>>16)&0xff) != 'A' || (header[0]>>8)&0xff != 'T' || (header[0]&0xff)!= 'A')
+	if(((header[0]>>24)&0xff) != 'D' || ((header[0]>>16)&0xff) != 'A' || ((header[0]>>8)&0xff) != 'T' || (header[0]&0xff) != 'A')
 	{
 		dbg_msg("datafile", "wrong signature. %x %x %x %x", header[0], header[1], header[2], header[3]);
 		return 0;
diff --git a/src/engine/network.cpp b/src/engine/network.cpp
index 5402aee7d..e95022f96 100644
--- a/src/engine/network.cpp
+++ b/src/engine/network.cpp
@@ -305,7 +305,7 @@ static int conn_feed(NETCONNECTION *conn, NETPACKETDATA *p, NETADDR4 *addr)
 		else if(conn->state == NETWORK_CONNSTATE_CONNECT)
 		{
 			// connection made
-			if(p->flags == NETWORK_PACKETFLAG_CONNECT|NETWORK_PACKETFLAG_ACCEPT)
+			if(p->flags == (NETWORK_PACKETFLAG_CONNECT|NETWORK_PACKETFLAG_ACCEPT))
 			{
 				conn_send(conn, NETWORK_PACKETFLAG_ACCEPT, 0, 0);
 				conn->state = NETWORK_CONNSTATE_ONLINE;
diff --git a/src/game/client/menu.cpp b/src/game/client/menu.cpp
index c8c41e4b2..acb4ebfbe 100644
--- a/src/game/client/menu.cpp
+++ b/src/game/client/menu.cpp
@@ -1024,13 +1024,13 @@ static int editor_screen_render()
 		// less
 		if (ui_do_button((void *)(200 + i * 2), "", 0, 650, 35 * i + 10 + 15, 16, 16, draw_single_part_button, (void *)slider_big_arrow_left))
 		{
-			current_font->m_CharStartTable[(int)s[0]] -= 0.01;
+			current_font->m_CharStartTable[(int)s[0]] -= 0.01f;
 		}
 
 		// more
 		if (ui_do_button((void *)(200 + i * 2 + 1), "", 0, 666, 35 * i + 10 + 15, 16, 16, draw_single_part_button, (void *)slider_big_arrow_right))
 		{
-			current_font->m_CharStartTable[(int)s[0]] += 0.01;
+			current_font->m_CharStartTable[(int)s[0]] += 0.01f;
 		}
 
 		char num[16];
@@ -1043,13 +1043,13 @@ static int editor_screen_render()
 		// less
 		if (ui_do_button((void *)(300 + i * 2), "", 0, 750, 35 * i + 10 + 15, 16, 16, draw_single_part_button, (void *)slider_big_arrow_left))
 		{
-			current_font->m_CharEndTable[(int)s[0]] -= 0.01;
+			current_font->m_CharEndTable[(int)s[0]] -= 0.01f;
 		}
 
 		// more
 		if (ui_do_button((void *)(300 + i * 2 + 1), "", 0, 766, 35 * i + 10 + 15, 16, 16, draw_single_part_button, (void *)slider_big_arrow_right))
 		{
-			current_font->m_CharEndTable[(int)s[0]] += 0.01;
+			current_font->m_CharEndTable[(int)s[0]] += 0.01f;
 		}
 
 		sprintf(num, "(%f)", current_font->m_CharEndTable[(int)s[0]]);
diff --git a/src/game/game.h b/src/game/game.h
index a14718879..9b21a4ede 100644
--- a/src/game/game.h
+++ b/src/game/game.h
@@ -18,7 +18,7 @@ inline float get_angle(baselib::vec2 dir)
 	return a;
 }
 
-inline bool col_check_point(float x, float y) { return col_check_point((int)x, (int)y); }
+inline bool col_check_point(float x, float y) { return col_check_point((int)x, (int)y) != 0; }
 inline bool col_check_point(baselib::vec2 p) { return col_check_point(p.x, p.y); }
 
 // Network stuff
diff --git a/src/game/server/game_server.cpp b/src/game/server/game_server.cpp
index 88cbb471c..f86b56af6 100644
--- a/src/game/server/game_server.cpp
+++ b/src/game/server/game_server.cpp
@@ -516,7 +516,7 @@ public:
 		if(num)
 		{
 			mapres_spawnpoint *sp = (mapres_spawnpoint*)map_get_item(start + (rand()%num), NULL, NULL);
-			pos = vec2(sp->x, sp->y);
+			pos = vec2((float)sp->x, (float)sp->y);
 		}
 		else
 			pos = vec2(100.0f, -60.0f);