diff --git a/openmp/runtime/src/kmp_wrapper_getpid.h b/openmp/runtime/src/kmp_wrapper_getpid.h
index 6b41dfcc20880..6d99b17702b2a 100644
--- a/openmp/runtime/src/kmp_wrapper_getpid.h
+++ b/openmp/runtime/src/kmp_wrapper_getpid.h
@@ -33,7 +33,7 @@
 #define __kmp_gettid() _lwp_self()
 #elif KMP_OS_OPENBSD
 #define __kmp_gettid() getthrid()
-#elif KMP_OS_AIX
+#elif KMP_OS_AIX || KMP_OS_SOLARIS
 #include <pthread.h>
 #define __kmp_gettid() pthread_self()
 #elif KMP_OS_HAIKU