diff --git a/src/client/client.cpp b/src/client/client.cpp
index 8913902..dd2373a 100644
--- a/src/client/client.cpp
+++ b/src/client/client.cpp
@@ -8,6 +8,7 @@
 #include <epicsMutex.h>
 #include <epicsGuard.h>
 #include <epicsEvent.h>
+#include <epicsThread.h>
 
 #include <pv/pvData.h>
 #include <pv/bitSet.h>
diff --git a/src/client/clientGet.cpp b/src/client/clientGet.cpp
index d72e794..fa4297c 100644
--- a/src/client/clientGet.cpp
+++ b/src/client/clientGet.cpp
@@ -6,6 +6,7 @@
 #include <epicsMutex.h>
 #include <epicsGuard.h>
 #include <epicsEvent.h>
+#include <epicsThread.h>
 
 #include <pv/current_function.h>
 #include <pv/pvData.h>
diff --git a/src/client/clientInfo.cpp b/src/client/clientInfo.cpp
index de71ce1..7b948dc 100644
--- a/src/client/clientInfo.cpp
+++ b/src/client/clientInfo.cpp
@@ -6,6 +6,7 @@
 #include <epicsMutex.h>
 #include <epicsGuard.h>
 #include <epicsEvent.h>
+#include <epicsThread.h>
 
 #include <pv/current_function.h>
 #include <pv/pvData.h>
diff --git a/src/client/clientMonitor.cpp b/src/client/clientMonitor.cpp
index 7a8fa14..08c5c79 100644
--- a/src/client/clientMonitor.cpp
+++ b/src/client/clientMonitor.cpp
@@ -6,6 +6,7 @@
 #include <epicsMutex.h>
 #include <epicsGuard.h>
 #include <epicsEvent.h>
+#include <epicsThread.h>
 
 #include <pv/current_function.h>
 #include <pv/pvData.h>
diff --git a/src/client/clientPut.cpp b/src/client/clientPut.cpp
index 86130aa..a0db7ec 100644
--- a/src/client/clientPut.cpp
+++ b/src/client/clientPut.cpp
@@ -6,6 +6,7 @@
 #include <epicsMutex.h>
 #include <epicsGuard.h>
 #include <epicsEvent.h>
+#include <epicsThread.h>
 
 #include <pv/current_function.h>
 #include <pv/pvData.h>
diff --git a/src/client/clientRPC.cpp b/src/client/clientRPC.cpp
index e3d0ce9..fcb80ea 100644
--- a/src/client/clientRPC.cpp
+++ b/src/client/clientRPC.cpp
@@ -6,6 +6,7 @@
 #include <epicsMutex.h>
 #include <epicsGuard.h>
 #include <epicsEvent.h>
+#include <epicsThread.h>
 
 #include <pv/pvData.h>
 #include <pv/bitSet.h>