diff --git a/include/freetype/internal/ftdrv.h b/include/freetype/internal/ftdrv.h
index 5609b3ef1..ca6134d22 100644
--- a/include/freetype/internal/ftdrv.h
+++ b/include/freetype/internal/ftdrv.h
@@ -162,7 +162,7 @@ FT_BEGIN_HEADER
    *   Most function pointers, with the exception of `load_glyph`, can be set
    *   to 0 to indicate a default behaviour.
    */
-  typedef struct  FT_Driver_ClassRec_
+  typedef const struct  FT_Driver_ClassRec_
   {
     FT_Module_Class          root;
 
@@ -216,7 +216,7 @@ FT_BEGIN_HEADER
    */
 #define FT_DECLARE_DRIVER( class_ )  \
   FT_CALLBACK_TABLE                  \
-  const FT_Driver_ClassRec  class_;
+  FT_Driver_ClassRec  class_;
 
 #define FT_DEFINE_DRIVER(                    \
           class_,                            \
@@ -245,7 +245,7 @@ FT_BEGIN_HEADER
           request_size_,                     \
           select_size_ )                     \
   FT_CALLBACK_TABLE_DEF                      \
-  const FT_Driver_ClassRec  class_ =         \
+  FT_Driver_ClassRec  class_ =               \
   {                                          \
     FT_DEFINE_ROOT_MODULE( flags_,           \
                            size_,            \
diff --git a/src/bdf/bdfdrivr.c b/src/bdf/bdfdrivr.c
index f57bb0007..a18dc7acd 100644
--- a/src/bdf/bdfdrivr.c
+++ b/src/bdf/bdfdrivr.c
@@ -985,7 +985,7 @@ THE SOFTWARE.
 
 
   FT_CALLBACK_TABLE_DEF
-  const FT_Driver_ClassRec  bdf_driver_class =
+  FT_Driver_ClassRec  bdf_driver_class =
   {
     {
       FT_MODULE_FONT_DRIVER         |
diff --git a/src/bdf/bdfdrivr.h b/src/bdf/bdfdrivr.h
index 54aaa3353..58bcaec3c 100644
--- a/src/bdf/bdfdrivr.h
+++ b/src/bdf/bdfdrivr.h
@@ -60,7 +60,7 @@ FT_BEGIN_HEADER
   } BDF_FaceRec, *BDF_Face;
 
 
-  FT_EXPORT_VAR( const FT_Driver_ClassRec )  bdf_driver_class;
+  FT_EXPORT_VAR( FT_Driver_ClassRec )  bdf_driver_class;
 
 
 FT_END_HEADER
diff --git a/src/cid/cidriver.c b/src/cid/cidriver.c
index 4be8a5c00..6da979b6f 100644
--- a/src/cid/cidriver.c
+++ b/src/cid/cidriver.c
@@ -230,7 +230,7 @@
 
 
   FT_CALLBACK_TABLE_DEF
-  const FT_Driver_ClassRec  t1cid_driver_class =
+  FT_Driver_ClassRec  t1cid_driver_class =
   {
     {
       FT_MODULE_FONT_DRIVER       |
diff --git a/src/cid/cidriver.h b/src/cid/cidriver.h
index 7ddce431c..c5fecfbcf 100644
--- a/src/cid/cidriver.h
+++ b/src/cid/cidriver.h
@@ -26,7 +26,7 @@
 FT_BEGIN_HEADER
 
   FT_CALLBACK_TABLE
-  const FT_Driver_ClassRec  t1cid_driver_class;
+  FT_Driver_ClassRec  t1cid_driver_class;
 
 FT_END_HEADER
 
diff --git a/src/pcf/pcfdrivr.c b/src/pcf/pcfdrivr.c
index ecd684951..0a1a12834 100644
--- a/src/pcf/pcfdrivr.c
+++ b/src/pcf/pcfdrivr.c
@@ -793,7 +793,7 @@ THE SOFTWARE.
 
 
   FT_CALLBACK_TABLE_DEF
-  const FT_Driver_ClassRec  pcf_driver_class =
+  FT_Driver_ClassRec  pcf_driver_class =
   {
     {
       FT_MODULE_FONT_DRIVER        |
diff --git a/src/pcf/pcfdrivr.h b/src/pcf/pcfdrivr.h
index d46539374..9f044f3d5 100644
--- a/src/pcf/pcfdrivr.h
+++ b/src/pcf/pcfdrivr.h
@@ -33,7 +33,7 @@ THE SOFTWARE.
 
 FT_BEGIN_HEADER
 
-  FT_EXPORT_VAR( const FT_Driver_ClassRec )  pcf_driver_class;
+  FT_EXPORT_VAR( FT_Driver_ClassRec )  pcf_driver_class;
 
 FT_END_HEADER
 
diff --git a/src/pfr/pfrdrivr.c b/src/pfr/pfrdrivr.c
index ffd822273..dc7e90558 100644
--- a/src/pfr/pfrdrivr.c
+++ b/src/pfr/pfrdrivr.c
@@ -168,7 +168,7 @@
 
 
   FT_CALLBACK_TABLE_DEF
-  const FT_Driver_ClassRec  pfr_driver_class =
+  FT_Driver_ClassRec  pfr_driver_class =
   {
     {
       FT_MODULE_FONT_DRIVER     |
diff --git a/src/pfr/pfrdrivr.h b/src/pfr/pfrdrivr.h
index 58954a9af..a07f6451b 100644
--- a/src/pfr/pfrdrivr.h
+++ b/src/pfr/pfrdrivr.h
@@ -25,7 +25,7 @@
 
 FT_BEGIN_HEADER
 
-  FT_EXPORT_VAR( const FT_Driver_ClassRec )  pfr_driver_class;
+  FT_EXPORT_VAR( FT_Driver_ClassRec )  pfr_driver_class;
 
 FT_END_HEADER
 
diff --git a/src/type1/t1driver.c b/src/type1/t1driver.c
index 8ed01914a..b3ac4be75 100644
--- a/src/type1/t1driver.c
+++ b/src/type1/t1driver.c
@@ -757,7 +757,7 @@
 
 
   FT_CALLBACK_TABLE_DEF
-  const FT_Driver_ClassRec  t1_driver_class =
+  FT_Driver_ClassRec  t1_driver_class =
   {
     {
       FT_MODULE_FONT_DRIVER       |
diff --git a/src/type1/t1driver.h b/src/type1/t1driver.h
index 5ff52b55b..14899c1d8 100644
--- a/src/type1/t1driver.h
+++ b/src/type1/t1driver.h
@@ -25,7 +25,7 @@
 
 FT_BEGIN_HEADER
 
-  FT_EXPORT_VAR( const FT_Driver_ClassRec )  t1_driver_class;
+  FT_EXPORT_VAR( FT_Driver_ClassRec )  t1_driver_class;
 
 FT_END_HEADER
 
diff --git a/src/type42/t42drivr.c b/src/type42/t42drivr.c
index 25f507f15..fe85a362e 100644
--- a/src/type42/t42drivr.c
+++ b/src/type42/t42drivr.c
@@ -199,7 +199,7 @@
   }
 
 
-  const FT_Driver_ClassRec  t42_driver_class =
+  FT_Driver_ClassRec  t42_driver_class =
   {
     {
       FT_MODULE_FONT_DRIVER       |
diff --git a/src/type42/t42drivr.h b/src/type42/t42drivr.h
index 5b3852b86..a49fcb3a9 100644
--- a/src/type42/t42drivr.h
+++ b/src/type42/t42drivr.h
@@ -25,7 +25,7 @@
 
 FT_BEGIN_HEADER
 
-  FT_EXPORT_VAR( const FT_Driver_ClassRec )  t42_driver_class;
+  FT_EXPORT_VAR( FT_Driver_ClassRec )  t42_driver_class;
 
 FT_END_HEADER
 
diff --git a/src/winfonts/winfnt.c b/src/winfonts/winfnt.c
index daa39bea1..43057877a 100644
--- a/src/winfonts/winfnt.c
+++ b/src/winfonts/winfnt.c
@@ -1176,7 +1176,7 @@
 
 
   FT_CALLBACK_TABLE_DEF
-  const FT_Driver_ClassRec  winfnt_driver_class =
+  FT_Driver_ClassRec  winfnt_driver_class =
   {
     {
       FT_MODULE_FONT_DRIVER        |
diff --git a/src/winfonts/winfnt.h b/src/winfonts/winfnt.h
index 78137496f..578d1b5cb 100644
--- a/src/winfonts/winfnt.h
+++ b/src/winfonts/winfnt.h
@@ -152,7 +152,7 @@ FT_BEGIN_HEADER
   } FNT_FaceRec, *FNT_Face;
 
 
-  FT_EXPORT_VAR( const FT_Driver_ClassRec )  winfnt_driver_class;
+  FT_EXPORT_VAR( FT_Driver_ClassRec )  winfnt_driver_class;
 
 
 FT_END_HEADER