diff --git a/complete.c b/complete.c
index 62b222b6b..0f52d492c 100644
--- a/complete.c
+++ b/complete.c
@@ -815,7 +815,7 @@ int complete_is_valid_option( const wchar_t *str,
 						str[0] = opt[j];
 						str[1]=0;
 						al_push( errors,
-								 wcsdupcat2(_( L"Unknown option: " ), L"'", str, L"'", 0) );
+								 wcsdupcat2(_( L"Unknown option: " ), L"'", str, L"'", (void *)0) );
 					}
 
 					opt_found = 0;
@@ -833,12 +833,12 @@ int complete_is_valid_option( const wchar_t *str,
 				if( hash_get_count( &gnu_match_hash )==0)
 				{
 					al_push( errors,
-							 wcsdupcat2( _(L"Unknown option: "), L"'", opt, L"\'", 0) );
+							 wcsdupcat2( _(L"Unknown option: "), L"'", opt, L"\'", (void *)0) );
 				}
 				else
 				{
 					al_push( errors,
-							 wcsdupcat2( _(L"Multiple matches for option: "), L"'", opt, L"\'", 0) );
+							 wcsdupcat2( _(L"Multiple matches for option: "), L"'", opt, L"\'", (void *)0) );
 				}
 			}
 		}
@@ -1214,7 +1214,7 @@ static void complete_cmd_desc( const wchar_t *cmd, array_list_t *comp )
 			wchar_t *new_el = wcsdupcat2( el,
 										  COMPLETE_SEP_STR,
 										  new_desc,
-										  0 );
+										  (void *)0 );
 
 			al_set( comp, i, new_el );
 			free( el );
@@ -1300,7 +1300,7 @@ static void complete_cmd( const wchar_t *cmd,
 				nxt_completion = wcsdupcat2( nxt_path,
 											 (nxt_path[wcslen(nxt_path)-1]==L'/'?L"":L"/"),
 											 cmd,
-											 0 );
+											 (void *)0 );
 				if( ! nxt_completion )
 					continue;
 				
@@ -1357,7 +1357,7 @@ static void complete_cmd( const wchar_t *cmd,
 				wcsdupcat2( nxt_path,
 							(nxt_path[wcslen(nxt_path)-1]==L'/'?L"":L"/"),
 							cmd,
-							0 );
+							(void *)0 );
 			if( ! nxt_completion )
 			{
 				continue;
@@ -1824,22 +1824,22 @@ static int complete_variable( const wchar_t *var,
 		if( wcsncmp( var, name, varlen) == 0 )
 		{
 			wchar_t *value_unescaped, *value;
-			
-			wchar_t *blarg;
 
 			value_unescaped = env_get( name );
 			if( value_unescaped )
 			{
+				wchar_t *desc;
+
 				value = expand_escape_variable( value_unescaped );
 				/*
 				  Variable description is 'Variable: VALUE
 				*/
-				blarg = wcsdupcat2( &name[varlen], COMPLETE_SEP_STR, COMPLETE_VAR_DESC_VAL, value, 0 );
+				desc = wcsdupcat2( &name[varlen], COMPLETE_SEP_STR, COMPLETE_VAR_DESC_VAL, value, (void *)0 );
 				
-				if( blarg )
+				if( desc )
 				{
 					res =1;
-					al_push( comp, blarg );
+					al_push( comp, desc );
 				}
 				free( value );
 			}
diff --git a/highlight.c b/highlight.c
index e6712a90d..471065555 100644
--- a/highlight.c
+++ b/highlight.c
@@ -559,8 +559,7 @@ void highlight_shell( wchar_t * buff,
 	{	
 		int last_type = tok_last_type( &tok );
 		int prev_argc=0;
-		
-				
+
 		switch( last_type )
 		{
 			case TOK_STRING:
@@ -624,7 +623,7 @@ void highlight_shell( wchar_t * buff,
 						int is_subcommand = 0;
 						int mark = tok_get_pos( &tok );
 						color[ tok_get_pos( &tok ) ] = HIGHLIGHT_COMMAND;
-						
+
 						if( parser_is_subcommand( cmd ) )
 						{
 							tok_next( &tok );
@@ -687,7 +686,7 @@ void highlight_shell( wchar_t * buff,
 							else
 							{
 								if( error )
-									al_push( error, wcsdupcat2 ( L"Unknown command \'", cmd, L"\'", 0 ));
+									al_push( error, wcsdupcat2 ( L"Unknown command \'", cmd, L"\'", (void *)0 ));
 								color[ tok_get_pos( &tok ) ] = (HIGHLIGHT_ERROR);
 							}
 							had_cmd = 1;
@@ -761,7 +760,7 @@ void highlight_shell( wchar_t * buff,
 						{
 							color[ tok_get_pos( &tok ) ] = HIGHLIGHT_ERROR;
 							if( error )
-								al_push( error, wcsdupcat2( L"Directory \'", dir, L"\' does not exist", 0 ) );
+								al_push( error, wcsdupcat2( L"Directory \'", dir, L"\' does not exist", (void *)0 ) );
 							
 						}
 					}
@@ -777,7 +776,7 @@ void highlight_shell( wchar_t * buff,
 						{
 							color[ tok_get_pos( &tok ) ] = HIGHLIGHT_ERROR;
 							if( error )
-								al_push( error, wcsdupcat2( L"File \'", target, L"\' does not exist", 0 ) );
+								al_push( error, wcsdupcat2( L"File \'", target, L"\' does not exist", (void *)0 ) );
 						}
 					}
 				}
diff --git a/history.c b/history.c
index 4a12ae005..3b000660a 100644
--- a/history.c
+++ b/history.c
@@ -150,7 +150,7 @@ static int history_load()
 				&hash_wcs_cmp,
 				4096 );
 
-	fn = wcsdupcat2( env_get(L"HOME"), L"/.", mode_name, L"_history", 0 );
+	fn = wcsdupcat2( env_get(L"HOME"), L"/.", mode_name, L"_history", (void *)0 );
 	
 	in_stream = wfopen( fn, "r" );
 	
@@ -384,7 +384,7 @@ static void history_save()
 		
 		/* Save the global history */
 		{
-			fn = wcsdupcat2( env_get(L"HOME"), L"/.", mode_name, L"_history", 0 );
+			fn = wcsdupcat2( env_get(L"HOME"), L"/.", mode_name, L"_history", (void *)0 );
 			
 			out_stream = wfopen( fn, "w" );
 			if( out_stream )
diff --git a/kill.c b/kill.c
index c49084a02..2fc688a7b 100644
--- a/kill.c
+++ b/kill.c
@@ -96,7 +96,7 @@ void kill_add( wchar_t *str )
 	if( (disp = env_get( L"DISPLAY" )) )
 	{
 		wchar_t *escaped_str = escape( str, 1 );
-		wchar_t *cmd = wcsdupcat2(L"echo ", escaped_str, L"|xsel -b",0);
+		wchar_t *cmd = wcsdupcat2(L"echo ", escaped_str, L"|xsel -b",(void *)0);
 		exec_subshell( cmd, 0 );
 		free( cut_buffer );
 		free( cmd );
@@ -145,7 +145,7 @@ static void kill_check_x_buffer()
 			else
 			{
 				wchar_t *old = new_cut_buffer;
-				new_cut_buffer= wcsdupcat2( new_cut_buffer, L"\\n", next_line, 0 );
+				new_cut_buffer= wcsdupcat2( new_cut_buffer, L"\\n", next_line, (void *)0 );
 				free( old );
 				free( next_line );	
 			}
diff --git a/parser.c b/parser.c
index 7f4ba0cb5..af34e35b4 100644
--- a/parser.c
+++ b/parser.c
@@ -712,7 +712,7 @@ wchar_t *parser_cdpath_get( void *context, wchar_t *dir )
 			whole_path =
 				wcsdupcat2( expanded_path,
 							( expanded_path[path_len-1] != L'/' )?L"/":L"",
-							dir, 0 );
+							dir, (void *)0 );
 
 			free(expanded_path );