--- include/lcms2.h
+++ include/lcms2.h
@@ -1248,13 +1248,13 @@
 CMSAPI void*             CMSEXPORT cmsStageData(const cmsStage* mpe);
 
 // Sampling
-typedef cmsInt32Number (* cmsSAMPLER16)   (register const cmsUInt16Number In[],
-                                            register cmsUInt16Number Out[],
-                                            register void * Cargo);
+typedef cmsInt32Number (* cmsSAMPLER16)   (const cmsUInt16Number In[],
+                                            cmsUInt16Number Out[],
+                                            void * Cargo);
 
-typedef cmsInt32Number (* cmsSAMPLERFLOAT)(register const cmsFloat32Number In[],
-                                            register cmsFloat32Number Out[],
-                                            register void * Cargo);
+typedef cmsInt32Number (* cmsSAMPLERFLOAT)(const cmsFloat32Number In[],
+                                            cmsFloat32Number Out[],
+                                            void * Cargo);
 
 // Use this flag to prevent changes being written to destination
 #define SAMPLER_INSPECT     0x01000000