diff --git a/extensions/CMakeLists.txt b/extensions/CMakeLists.txt
index 135d28d5c..e545b6d6f 100644
--- a/extensions/CMakeLists.txt
+++ b/extensions/CMakeLists.txt
@@ -17,8 +17,6 @@ include_directories(
   ${PROJECT_BINARY_DIR}/src
 )
 
-include (GenerateExportHeader)
-
 include_directories(. ${CMAKE_CURRENT_BINARY_DIR})
 
 set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE} -pg")
@@ -29,6 +27,7 @@ if (CMARK_SHARED)
 
   set_target_properties(${LIBRARY} PROPERTIES
     OUTPUT_NAME "cmark-gfm-extensions"
+    DEFINE_SYMBOL "cmark-gfm"
     SOVERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}.gfm.${PROJECT_VERSION_GFM}
     VERSION ${PROJECT_VERSION})
 
@@ -38,9 +37,6 @@ if (CMARK_SHARED)
   # Avoid name clash between PROGRAM and LIBRARY pdb files.
   set_target_properties(${LIBRARY} PROPERTIES PDB_NAME cmark-gfm-extensions_dll)
 
-  generate_export_header(${LIBRARY}
-    BASE_NAME cmark-gfm-extensions)
-
   list(APPEND CMARK_INSTALL ${LIBRARY})
   target_link_libraries(${LIBRARY} libcmark-gfm)
 
@@ -51,6 +47,7 @@ if (CMARK_STATIC)
 
   set_target_properties(${STATICLIBRARY} PROPERTIES
     COMPILE_FLAGS "-DCMARK_GFM_STATIC_DEFINE -DCMARK_GFM_EXTENSIONS_STATIC_DEFINE"
+    DEFINE_SYMBOL "cmark-gfm"
     POSITION_INDEPENDENT_CODE ON)
 
   if (MSVC)
@@ -63,11 +60,6 @@ if (CMARK_STATIC)
       VERSION ${PROJECT_VERSION})
   endif(MSVC)
 
-  if (NOT CMARK_SHARED)
-    generate_export_header(${STATICLIBRARY}
-      BASE_NAME cmark-gfm-extensions)
-  endif()
-
   list(APPEND CMARK_INSTALL ${STATICLIBRARY})
 endif()
 
@@ -84,7 +76,6 @@ install(TARGETS ${CMARK_INSTALL}
 if (CMARK_SHARED OR CMARK_STATIC)
   install(FILES
   cmark-gfm-core-extensions.h
-  ${CMAKE_CURRENT_BINARY_DIR}/cmark-gfm-extensions_export.h
   DESTINATION include
   )
 
diff --git a/extensions/cmark-gfm-core-extensions.h b/extensions/cmark-gfm-core-extensions.h
index 3a32f76b0..bc29ffd41 100644
--- a/extensions/cmark-gfm-core-extensions.h
+++ b/extensions/cmark-gfm-core-extensions.h
@@ -6,45 +6,45 @@ extern "C" {
 #endif
 
 #include "cmark-gfm-extension_api.h"
-#include "cmark-gfm-extensions_export.h"
+#include "cmark-gfm_export.h"
 #include <stdbool.h>
 #include <stdint.h>
 
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 void cmark_gfm_core_extensions_ensure_registered(void);
 
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 uint16_t cmark_gfm_extensions_get_table_columns(cmark_node *node);
 
 /** Sets the number of columns for the table, returning 1 on success and 0 on error.
  */
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 int cmark_gfm_extensions_set_table_columns(cmark_node *node, uint16_t n_columns);
 
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 uint8_t *cmark_gfm_extensions_get_table_alignments(cmark_node *node);
 
 /** Sets the alignments for the table, returning 1 on success and 0 on error.
  */
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 int cmark_gfm_extensions_set_table_alignments(cmark_node *node, uint16_t ncols, uint8_t *alignments);
 
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 int cmark_gfm_extensions_get_table_row_is_header(cmark_node *node);
 
 /** Sets whether the node is a table header row, returning 1 on success and 0 on error.
  */
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 int cmark_gfm_extensions_set_table_row_is_header(cmark_node *node, int is_header);
 
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 bool cmark_gfm_extensions_get_tasklist_item_checked(cmark_node *node);
 /* For backwards compatibility */
 #define cmark_gfm_extensions_tasklist_is_checked cmark_gfm_extensions_get_tasklist_item_checked
 
 /** Sets whether a tasklist item is "checked" (completed), returning 1 on success and 0 on error.
  */
-CMARK_GFM_EXTENSIONS_EXPORT
+CMARK_GFM_EXPORT
 int cmark_gfm_extensions_set_tasklist_item_checked(cmark_node *node, bool is_checked);
 
 #ifdef __cplusplus