diff --git a/engine/client/ref_common.c b/engine/client/ref_common.c
index 6a001428..41fb6da6 100644
--- a/engine/client/ref_common.c
+++ b/engine/client/ref_common.c
@@ -443,7 +443,7 @@ static qboolean R_LoadProgs( const char *name )
 	if( !( GetRefAPI = (REFAPI)COM_GetProcAddress( ref.hInstance, GET_REF_API )) )
 	{
 		COM_FreeLibrary( ref.hInstance );
-		Con_Reportf( "R_LoadProgs: can't find GetRefAPI entry point in %s: %s\n", name );
+		Con_Reportf( "R_LoadProgs: can't find GetRefAPI entry point in %s\n", name );
 		ref.hInstance = NULL;
 		return false;
 	}
@@ -599,7 +599,7 @@ void R_CollectRendererNames( void )
 		pfn = COM_GetProcAddress( dll, GET_REF_API );
 		if( !pfn )
 		{
-			Con_Reportf( "R_CollectRendererNames: can't find API entry point in %s\n", temp, COM_GetLibraryError() );
+			Con_Reportf( "R_CollectRendererNames: can't find API entry point in %s\n", temp );
 			COM_FreeLibrary( dll );
 			continue;
 		}
diff --git a/engine/client/s_vox.c b/engine/client/s_vox.c
index 8744825c..38047960 100644
--- a/engine/client/s_vox.c
+++ b/engine/client/s_vox.c
@@ -546,7 +546,7 @@ void VOX_ParseLineCommands( char *pSentenceData, int sentenceIndex )
 		length = pNext - pSentenceData;
 		if( tempBufferPos + length > sizeof( tempBuffer ))
 		{
-			Con_Printf( S_ERROR "Sentence too long (max length %d characters)\n", sizeof(tempBuffer) - 1 );
+			Con_Printf( S_ERROR "Sentence too long (max length %lu characters)\n", sizeof(tempBuffer) - 1 );
 			return;
 		}
 
diff --git a/engine/common/con_utils.c b/engine/common/con_utils.c
index a1e6f822..f2c35017 100644
--- a/engine/common/con_utils.c
+++ b/engine/common/con_utils.c
@@ -563,7 +563,7 @@ qboolean Cmd_GetKeysList( const char *s, char *completedname, int length )
 		Con_Printf( "%16s\n", matchbuf );
 	}
 
-	Con_Printf( "\n^3 %i keys found.\n", numkeys );
+	Con_Printf( "\n^3 %lu keys found.\n", numkeys );
 
 	if( completedname && length )
 	{
diff --git a/engine/common/filesystem.c b/engine/common/filesystem.c
index 2cefe20b..aaf60591 100644
--- a/engine/common/filesystem.c
+++ b/engine/common/filesystem.c
@@ -1347,7 +1347,7 @@ static void FS_WriteGameInfo( const char *filepath, gameinfo_t *GameInfo )
 		FS_Printf( f, "version\t\t%g\n", GameInfo->version );
 
 	if( GameInfo->size != 0 )
-		FS_Printf( f, "size\t\t%i\n", GameInfo->size );
+		FS_Printf( f, "size\t\t%lu\n", GameInfo->size );
 
 	if( Q_strlen( GameInfo->game_url ))
 		FS_Printf( f, "url_info\t\t\"%s\"\n", GameInfo->game_url );
diff --git a/engine/common/imagelib/img_dds.c b/engine/common/imagelib/img_dds.c
index ac752d7e..468a2003 100644
--- a/engine/common/imagelib/img_dds.c
+++ b/engine/common/imagelib/img_dds.c
@@ -225,7 +225,7 @@ uint Image_DXTCalcSize( const char *name, dds_t *hdr, size_t filesize )
 
 	if( filesize != buffsize ) // main check
 	{
-		Con_DPrintf( S_WARN "Image_LoadDDS: (%s) probably corrupted (%i should be %i)\n", name, buffsize, filesize );
+		Con_DPrintf( S_WARN "Image_LoadDDS: (%s) probably corrupted (%i should be %lu)\n", name, buffsize, filesize );
 		if( buffsize > filesize )
 			return false;
 	}
diff --git a/engine/common/lib_common.c b/engine/common/lib_common.c
index 8a361794..737610f4 100644
--- a/engine/common/lib_common.c
+++ b/engine/common/lib_common.c
@@ -48,7 +48,7 @@ void *COM_FunctionFromName_SR( void *hInstance, const char *pName )
 const char *COM_OffsetNameForFunction( void *function )
 {
 	static string sname;
-	Q_snprintf( sname, MAX_STRING, "ofs:%d", (size_t)((byte*)function - (byte*)svgame.dllFuncs.pfnGameInit) );
+	Q_snprintf( sname, MAX_STRING, "ofs:%lu", (size_t)((byte*)function - (byte*)svgame.dllFuncs.pfnGameInit) );
 	Con_Reportf( "COM_OffsetNameForFunction %s\n", sname );
 	return sname;
 }
diff --git a/engine/common/mod_bmodel.c b/engine/common/mod_bmodel.c
index 095b3d44..664aad1b 100644
--- a/engine/common/mod_bmodel.c
+++ b/engine/common/mod_bmodel.c
@@ -308,7 +308,7 @@ static void Mod_LoadLump( const byte *in, mlumpinfo_t *info, mlumpstat_t *stat,
 	if( l->filelen % real_entrysize )
 	{
 		if( !FBitSet( flags, LUMP_SILENT ))
-			Con_DPrintf( S_ERROR "Mod_Load%s: Lump size %d was not a multiple of %u bytes\n", msg2, l->filelen, real_entrysize );
+			Con_DPrintf( S_ERROR "Mod_Load%s: Lump size %d was not a multiple of %lu bytes\n", msg2, l->filelen, real_entrysize );
 		loadstat.numerrors++;
 		return;
 	}
@@ -1392,7 +1392,7 @@ static qboolean Mod_LoadColoredLighting( dbspmodel_t *bmod )
 
 	if( litdatasize != ( bmod->lightdatasize * 3 ))
 	{
-		Con_Printf( S_ERROR "%s has mismatched size (%li should be %i)\n", path, litdatasize, bmod->lightdatasize * 3 );
+		Con_Printf( S_ERROR "%s has mismatched size (%li should be %lu)\n", path, litdatasize, bmod->lightdatasize * 3 );
 		Mem_Free( in );
 		return false;
 	}
@@ -1447,7 +1447,7 @@ static void Mod_LoadDeluxemap( dbspmodel_t *bmod )
 
 	if( deluxdatasize != bmod->lightdatasize )
 	{
-		Con_Reportf( S_ERROR "%s has mismatched size (%li should be %i)\n", path, deluxdatasize, bmod->lightdatasize );
+		Con_Reportf( S_ERROR "%s has mismatched size (%li should be %lu)\n", path, deluxdatasize, bmod->lightdatasize );
 		Mem_Free( in );
 		return;
 	}
@@ -2296,7 +2296,7 @@ static void Mod_LoadSurfaces( dbspmodel_t *bmod )
 
 			if(( in->firstedge + in->numedges ) > loadmodel->numsurfedges )
 			{
-				Con_Reportf( S_ERROR "bad surface %i from %i\n", i, bmod->numsurfaces );
+				Con_Reportf( S_ERROR "bad surface %i from %lu\n", i, bmod->numsurfaces );
 				continue;
 			}
 
@@ -2631,7 +2631,7 @@ static void Mod_LoadLightVecs( dbspmodel_t *bmod )
 	if( bmod->deluxdatasize != bmod->lightdatasize )
 	{
 		if( bmod->deluxdatasize > 0 )
-			Con_Printf( S_ERROR "Mod_LoadLightVecs: has mismatched size (%i should be %i)\n", bmod->deluxdatasize, bmod->lightdatasize );
+			Con_Printf( S_ERROR "Mod_LoadLightVecs: has mismatched size (%lu should be %i)\n", bmod->deluxdatasize, bmod->lightdatasize );
 		else Mod_LoadDeluxemap( bmod ); // old method
 		return;
 	}
@@ -2650,7 +2650,7 @@ static void Mod_LoadShadowmap( dbspmodel_t *bmod )
 	if( bmod->shadowdatasize != ( bmod->lightdatasize / 3 ))
 	{
 		if( bmod->shadowdatasize > 0 )
-			Con_Printf( S_ERROR "Mod_LoadShadowmap: has mismatched size (%i should be %i)\n", bmod->shadowdatasize, bmod->lightdatasize / 3 );
+			Con_Printf( S_ERROR "Mod_LoadShadowmap: has mismatched size (%i should be %lu)\n", bmod->shadowdatasize, bmod->lightdatasize / 3 );
 		return;
 	}