diff --git a/projects/clr/hipamd/tests/src/hipEnvVarDriver.cpp b/projects/clr/hipamd/tests/src/hipEnvVarDriver.cpp
index 245b23b52e..b5cab268b7 100644
--- a/projects/clr/hipamd/tests/src/hipEnvVarDriver.cpp
+++ b/projects/clr/hipamd/tests/src/hipEnvVarDriver.cpp
@@ -20,6 +20,8 @@ THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
 #include <stdio.h>
 #include <stdlib.h>
 #include <assert.h>
+#include <string>
+
 using namespace std;
 
 //./hipEnvVar -c -d 0 -h