diff --git a/src/actions.cpp b/src/actions.cpp
index 554522f6..17555789 100644
--- a/src/actions.cpp
+++ b/src/actions.cpp
@@ -571,7 +571,7 @@ namespace Action {
                 !result && g != Params::instance().greps_.end(); ++g)
         {
 #if EXV_HAVE_REGEX
-            result = regexec( &(*g), key.c_str(), 0, NULL, REG_BASIC) == 0 ;
+            result = regexec( &(*g), key.c_str(), 0, NULL, 0) == 0 ;
 #else
             result = key.find(*g) != std::string::npos;
 #endif
diff --git a/src/version.cpp b/src/version.cpp
index 39d1104b..555872c0 100644
--- a/src/version.cpp
+++ b/src/version.cpp
@@ -151,8 +151,8 @@ static void output(std::ostream& os,const exv_grep_keys_t& greps,const char* nam
         !bPrint && g != greps.end() ; ++g
     ) {
 #if EXV_HAVE_REGEX
-        bPrint = (  0 == regexec( &(*g), name         , 0, NULL, REG_BASIC)
-                 || 0 == regexec( &(*g), value.c_str(), 0, NULL, REG_BASIC)
+        bPrint = (  0 == regexec( &(*g), name         , 0, NULL, 0)
+                 || 0 == regexec( &(*g), value.c_str(), 0, NULL, 0)
                  );
 #else
         bPrint = std::string(name).find(*g) != std::string::npos || value.find(*g) != std::string::npos;