diff --git a/eo/src/utils/eoRNG.h b/eo/src/utils/eoRNG.h
index 0093d37da..b26337ff9 100644
--- a/eo/src/utils/eoRNG.h
+++ b/eo/src/utils/eoRNG.h
@@ -483,14 +483,8 @@ inline void eoRng::initialize(uint32_t seed)
 {
     left = -1;
 
-    // ISO C++17 does not allow 'register' storage class specifier
-#if __cplusplus < 201703L
-    register uint32_t x = (seed | 1U) & 0xFFFFFFFFU, *s = state;
-    register int j;
-#else
     uint32_t x = (seed | 1U) & 0xFFFFFFFFU, *s = state;
     int j;
-#endif
     for(left=0, *s++=x, j=N; --j;
         *s++ = (x*=69069U) & 0xFFFFFFFFU) ;
 }
@@ -499,14 +493,8 @@ inline void eoRng::initialize(uint32_t seed)
 
 inline uint32_t eoRng::restart()
 {
-    // ISO C++17 does not allow 'register' storage class specifier
-#if __cplusplus < 201703L
-    register uint32_t *p0=state, *p2=state+2, *pM=state+M, s0, s1;
-    register int j;
-#else
     uint32_t *p0=state, *p2=state+2, *pM=state+M, s0, s1;
     int j;
-#endif
 
     left=N-1, next=state+1;