diff --git a/src/libCom/osi/osiSem.h b/src/libCom/osi/osiSem.h
index d91e375a5..9fdc82ebd 100644
--- a/src/libCom/osi/osiSem.h
+++ b/src/libCom/osi/osiSem.h
@@ -1,7 +1,7 @@
 #ifndef osiSemh
 #define osiSemh
 
-#include <epicsAssert.h>
+#include "epicsAssert.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/src/libCom/osi/osiSock.c b/src/libCom/osi/osiSock.c
index 10b8c6017..5dbb85d13 100644
--- a/src/libCom/osi/osiSock.c
+++ b/src/libCom/osi/osiSock.c
@@ -35,8 +35,8 @@
 #include <string.h>
 
 #define epicsExportSharedSymbols
-#include <epicsAssert.h>
-#include <osiSock.h>
+#include "epicsAssert.h"
+#include "osiSock.h"
 
 #define nDigitsDottedIP 4u
 #define maxChunkDigit 3u
diff --git a/src/libCom/osi/osiThread.h b/src/libCom/osi/osiThread.h
index 74f530e0c..60017e025 100644
--- a/src/libCom/osi/osiThread.h
+++ b/src/libCom/osi/osiThread.h
@@ -147,7 +147,7 @@ private:
 
 #ifdef __cplusplus
 
-#include <epicsAssert.h>
+#include "epicsAssert.h"
 
 inline void osiThread::resume ()
 {