diff --git a/src/bdf/bdfdrivr.c b/src/bdf/bdfdrivr.c
index 4f03116be..4b3fb7664 100644
--- a/src/bdf/bdfdrivr.c
+++ b/src/bdf/bdfdrivr.c
@@ -420,7 +420,7 @@ THE SOFTWARE.
           goto Exit;
       }
       else
-        bdfface->family_name = 0;
+        bdfface->family_name = NULL;
 
       if ( ( error = bdf_interpret_style( face ) ) != 0 )
         goto Exit;
@@ -509,7 +509,7 @@ THE SOFTWARE.
 
       /* charmaps */
       {
-        bdf_property_t  *charset_registry = 0, *charset_encoding = 0;
+        bdf_property_t  *charset_registry, *charset_encoding;
         FT_Bool          unicode_charmap  = 0;
 
 
diff --git a/src/bdf/bdflib.c b/src/bdf/bdflib.c
index c1d4e59a0..8655d0ed3 100644
--- a/src/bdf/bdflib.c
+++ b/src/bdf/bdflib.c
@@ -683,7 +683,7 @@
     unsigned long     lineno, buf_size;
     int               refill, hold, to_skip;
     ptrdiff_t         bytes, start, end, cursor, avail;
-    char*             buf    = 0;
+    char*             buf    = NULL;
     FT_Memory         memory = stream->memory;
     FT_Error          error  = FT_Err_Ok;
 
@@ -1751,7 +1751,7 @@
         glyph->encoding = p->glyph_enc;
 
         /* Reset the initial glyph info. */
-        p->glyph_name = 0;
+        p->glyph_name = NULL;
       }
       else
       {
@@ -1779,7 +1779,7 @@
           /* kept.                                                */
           FT_FREE( p->glyph_name );
 
-        p->glyph_name = 0;
+        p->glyph_name = NULL;
       }
 
       /* Clear the flags that might be added when width and height are */
diff --git a/src/pcf/pcfread.c b/src/pcf/pcfread.c
index 3cdd9ed6f..039af33e9 100644
--- a/src/pcf/pcfread.c
+++ b/src/pcf/pcfread.c
@@ -448,14 +448,14 @@ THE SOFTWARE.
   pcf_get_properties( FT_Stream  stream,
                       PCF_Face   face )
   {
-    PCF_ParseProperty  props      = 0;
+    PCF_ParseProperty  props      = NULL;
     PCF_Property       properties = NULL;
     FT_ULong           nprops, i;
     FT_ULong           format, size;
     FT_Error           error;
     FT_Memory          memory     = FT_FACE( face )->memory;
     FT_ULong           string_size;
-    FT_String*         strings    = 0;
+    FT_String*         strings    = NULL;
 
 
     error = pcf_seek_to_table_type( stream,
@@ -620,7 +620,7 @@ THE SOFTWARE.
     FT_Error    error;
     FT_Memory   memory  = FT_FACE( face )->memory;
     FT_ULong    format, size;
-    PCF_Metric  metrics = 0;
+    PCF_Metric  metrics = NULL;
     FT_ULong    nmetrics, i;
 
 
@@ -1316,7 +1316,7 @@ THE SOFTWARE.
 
       /* set up charset */
       {
-        PCF_Property  charset_registry = 0, charset_encoding = 0;
+        PCF_Property  charset_registry, charset_encoding;
 
 
         charset_registry = pcf_find_property( face, "CHARSET_REGISTRY" );
diff --git a/src/truetype/ttgload.c b/src/truetype/ttgload.c
index bb0931e84..b38027113 100644
--- a/src/truetype/ttgload.c
+++ b/src/truetype/ttgload.c
@@ -409,7 +409,7 @@
 
     /* reading the bytecode instructions */
     load->glyph->control_len  = 0;
-    load->glyph->control_data = 0;
+    load->glyph->control_data = NULL;
 
     if ( p + 2 > limit )
       goto Invalid_Outline;
@@ -1730,7 +1730,7 @@
 
       {
         FT_UInt      n, num_base_points;
-        FT_SubGlyph  subglyph       = 0;
+        FT_SubGlyph  subglyph       = NULL;
 
         FT_UInt      num_points     = start_point;
         FT_UInt      num_subglyphs  = gloader->current.num_subglyphs;