diff --git a/src/os/__osLeoInterrupt.c b/src/os/__osLeoInterrupt.c
index e77c5af6d..6d3b23071 100644
--- a/src/os/__osLeoInterrupt.c
+++ b/src/os/__osLeoInterrupt.c
@@ -1,4 +1,4 @@
-#include "ultra64.h"
+#include <ultra64.h>
 #include "osint.h"
 #include "piint.h"
 #include "libultra_internal.h"
diff --git a/src/os/contramread.c b/src/os/contramread.c
index 5f3b6e68d..8a0486b37 100644
--- a/src/os/contramread.c
+++ b/src/os/contramread.c
@@ -1,5 +1,5 @@
 #include "libultra_internal.h"
-#include "PR/rcp.h"
+#include <PR/rcp.h>
 #include "controller.h"
 
 extern s32 __osPfsGetStatus(OSMesgQueue *, s32);
diff --git a/src/os/contramwrite.c b/src/os/contramwrite.c
index ebb8d77c5..56f42bcef 100644
--- a/src/os/contramwrite.c
+++ b/src/os/contramwrite.c
@@ -1,5 +1,5 @@
 #include "libultra_internal.h"
-#include "PR/rcp.h"
+#include <PR/rcp.h>
 #include "controller.h"
 
 extern s32 __osPfsGetStatus(OSMesgQueue *, s32);
diff --git a/src/os/controller.h b/src/os/controller.h
index 541fafdc6..d0f8a3b1c 100644
--- a/src/os/controller.h
+++ b/src/os/controller.h
@@ -1,8 +1,8 @@
 #ifndef _CONTROLLER_H
 #define _CONTROLLER_H
-#include "PR/os_internal.h"
-#include "PR/os.h"
-#include "PR/rcp.h"
+#include <PR/os_internal.h>
+#include <PR/os.h>
+#include <PR/rcp.h>
 
 //should go somewhere else but
 #define ARRLEN(x) ((s32)(sizeof(x) / sizeof(x[0])))
diff --git a/src/os/epidma.c b/src/os/epidma.c
index 3aa76f17a..fb9e36393 100644
--- a/src/os/epidma.c
+++ b/src/os/epidma.c
@@ -1,6 +1,6 @@
 #ifdef VERSION_SH
 
-#include "PR/os_internal.h"
+#include <PR/os_internal.h>
 #include "piint.h"
 
 s32 osEPiStartDma(OSPiHandle *pihandle, OSIoMesg *mb, s32 direction) {
diff --git a/src/os/leointerrupt.c b/src/os/leointerrupt.c
index db221dba9..1bc26a1a9 100644
--- a/src/os/leointerrupt.c
+++ b/src/os/leointerrupt.c
@@ -1,5 +1,5 @@
 #include "libultra_internal.h"
-#include "PR/rcp.h"
+#include <PR/rcp.h>
 #include "bstring.h"
 #include "piint.h"
 #include "osint.h"
diff --git a/src/os/osCartRomInit.c b/src/os/osCartRomInit.c
index b1b6599c7..b8242a97e 100644
--- a/src/os/osCartRomInit.c
+++ b/src/os/osCartRomInit.c
@@ -1,11 +1,11 @@
 #include "libultra_internal.h"
 
-#include "PR/os_vi.h"
-#include "PR/os_internal.h"
-#include "PR/R4300.h"
-#include "PR/rcp.h"
-#include "PR/os_pi.h"
-#include "PR/os.h"
+#include <PR/os_vi.h>
+#include <PR/os_internal.h>
+#include <PR/R4300.h>
+#include <PR/rcp.h>
+#include <PR/os_pi.h>
+#include <PR/os.h>
 
 OSPiHandle CartRomHandle;
 
diff --git a/src/os/osEPiRawStartDma.c b/src/os/osEPiRawStartDma.c
index 31d9fd37c..2c444d176 100644
--- a/src/os/osEPiRawStartDma.c
+++ b/src/os/osEPiRawStartDma.c
@@ -1,7 +1,7 @@
 #include "libultra_internal.h"
 #include "hardware.h"
 #include "new_func.h"
-#include "PR/R4300.h"
+#include <PR/R4300.h>
 //! @todo This define is from piint.h, but including that causes problems...
 #define UPDATE_REG(reg, var)                                                                           \
     if (cHandle->var != pihandle->var) \
diff --git a/src/os/osPfsIsPlug.c b/src/os/osPfsIsPlug.c
index 4df1bf328..434a097c5 100644
--- a/src/os/osPfsIsPlug.c
+++ b/src/os/osPfsIsPlug.c
@@ -1,6 +1,6 @@
 #include "libultra_internal.h"
 
-#include "PR/os_pi.h"
+#include <PR/os_pi.h>
 #include "controller.h"
 
 OSPifRam __osPfsPifRam;
diff --git a/src/os/osPfsNumFiles.c b/src/os/osPfsNumFiles.c
index 09d0eba6f..006329949 100755
--- a/src/os/osPfsNumFiles.c
+++ b/src/os/osPfsNumFiles.c
@@ -1,5 +1,5 @@
 #include "libultra_internal.h"
-#include "PR/os.h"
+#include <PR/os.h>
 #include "controller.h"
 
 s32 osPfsNumFiles(OSPfs *pfs, s32 *max_files, s32 *files_used)
diff --git a/src/os/piint.h b/src/os/piint.h
index 39278eed9..86337b917 100644
--- a/src/os/piint.h
+++ b/src/os/piint.h
@@ -1,9 +1,9 @@
 #ifndef _PIINT_H
 #define _PIINT_H
-#include "PR/os_internal.h"
-#include "PR/rcp.h"
-#include "PR/os_pi.h"
-#include "PR/os.h"
+#include <PR/os_internal.h>
+#include <PR/rcp.h>
+#include <PR/os_pi.h>
+#include <PR/os.h>
 
 //https://github.com/LuigiBlood/64dd/wiki/Memory-Map