--- CoinUtils/src/CoinOslC.h
+++ CoinUtils/src/CoinOslC.h
@@ -34,30 +34,30 @@
 extern "C"{
 #endif
 
-int c_ekkbtrn( register const EKKfactinfo *fact,
+int c_ekkbtrn( const EKKfactinfo *fact,
 	    double *dwork1,
 	    int * mpt,int first_nonzero);
-int c_ekkbtrn_ipivrw( register const EKKfactinfo *fact,
+int c_ekkbtrn_ipivrw( const EKKfactinfo *fact,
 		   double *dwork1,
 		   int * mpt, int ipivrw,int * spare);
 
-int c_ekketsj( register /*const*/ EKKfactinfo *fact,
+int c_ekketsj( /*const*/ EKKfactinfo *fact,
 	    double *dwork1,
 	    int *mpt2, double dalpha, int orig_nincol,
 	    int npivot, int *nuspikp,
 	    const int ipivrw, int * spare);
-int c_ekkftrn( register const EKKfactinfo *fact, 
+int c_ekkftrn( const EKKfactinfo *fact, 
 	    double *dwork1,
 	    double * dpermu,int * mpt, int numberNonZero);
 
-int c_ekkftrn_ft( register EKKfactinfo *fact, 
+int c_ekkftrn_ft( EKKfactinfo *fact, 
 	       double *dwork1, int *mpt, int *nincolp);
-void c_ekkftrn2( register EKKfactinfo *fact, double *dwork1,
+void c_ekkftrn2( EKKfactinfo *fact, double *dwork1,
 	      double * dpermu1,int * mpt1, int *nincolp,
 	     double *dwork1_ft, int *mpt_ft, int *nincolp_ft);
 
-int c_ekklfct( register EKKfactinfo *fact);
-int c_ekkslcf( register const EKKfactinfo *fact);
+int c_ekklfct( EKKfactinfo *fact);
+int c_ekkslcf( const EKKfactinfo *fact);
 inline void c_ekkscpy(int n, const int *marr1,int *marr2)
 { CoinMemcpyN(marr1,n,marr2);} 
 inline void c_ekkdcpy(int n, const double *marr1,double *marr2)
--- CoinUtils/src/CoinOslFactorization2.cpp
+++ CoinUtils/src/CoinOslFactorization2.cpp
@@ -20,9 +20,9 @@
 extern int ets_count;
 extern int ets_check;
 #endif
-#define COIN_REGISTER register
+#define COIN_REGISTER
 #define COIN_REGISTER2
-#define COIN_REGISTER3 register
+#define COIN_REGISTER3
 #ifdef COIN_USE_RESTRICT
 # define COIN_RESTRICT2 __restrict
 #else
--- CoinUtils/src/CoinOslFactorization3.cpp
+++ CoinUtils/src/CoinOslFactorization3.cpp
@@ -1378,7 +1378,7 @@
     }
   }
 } /* c_ekkmltf */
-int c_ekklfct( register EKKfactinfo *fact)
+int c_ekklfct( EKKfactinfo *fact)
 {
   const int nrow	= fact->nrow;
   int ninbas = fact->xcsadr[nrow+1]-1;
@@ -2607,7 +2607,7 @@
     }
   }
 } /* c_ekkclcp */
-int c_ekkslcf( register const EKKfactinfo *fact)
+int c_ekkslcf( const EKKfactinfo *fact)
 {
   int * hrow = fact->xeradr;
   int * hcol = fact->xecadr;