diff --git a/backends/fs/psp/psp-fs-factory.cpp b/backends/fs/psp/psp-fs-factory.cpp
index 7fd8d8b0772..6b0364b57e0 100644
--- a/backends/fs/psp/psp-fs-factory.cpp
+++ b/backends/fs/psp/psp-fs-factory.cpp
@@ -24,8 +24,29 @@
 
 #if defined(__PSP__)
 
+// Disable printf override in common/forbidden.h to avoid
+// clashes with pspdebug.h from the PSP SDK.
+// That header file uses
+//   __attribute__((format(printf,1,2)));
+// which gets messed up by our override mechanism; this could
+// be avoided by either changing the PSP SDK to use the equally
+// legal and valid
+//   __attribute__((format(__printf__,1,2)));
+// or by refining our printf override to use a varadic macro
+// (which then wouldn't be portable, though).
+// Anyway, for now we just disable the printf override globally
+// for the PSP port
+#define FORBIDDEN_SYMBOL_EXCEPTION_printf
+
+// Avoid clashes with unistd.h
+#define FORBIDDEN_SYMBOL_EXCEPTION_chdir
+#define FORBIDDEN_SYMBOL_EXCEPTION_unlink
+
 #include "backends/fs/psp/psp-fs-factory.h"
 #include "backends/fs/psp/psp-fs.h"
+#include "backends/platform/psp/powerman.h"
+
+#include <unistd.h>
 
 DECLARE_SINGLETON(PSPFilesystemFactory);
 
diff --git a/backends/fs/psp/psp-fs.cpp b/backends/fs/psp/psp-fs.cpp
index e7fa265b318..b36b7a017c5 100644
--- a/backends/fs/psp/psp-fs.cpp
+++ b/backends/fs/psp/psp-fs.cpp
@@ -24,6 +24,28 @@
 
 #if defined(__PSP__)
 
+// Disable printf override in common/forbidden.h to avoid
+// clashes with pspdebug.h from the PSP SDK.
+// That header file uses
+//   __attribute__((format(printf,1,2)));
+// which gets messed up by our override mechanism; this could
+// be avoided by either changing the PSP SDK to use the equally
+// legal and valid
+//   __attribute__((format(__printf__,1,2)));
+// or by refining our printf override to use a varadic macro
+// (which then wouldn't be portable, though).
+// Anyway, for now we just disable the printf override globally
+// for the PSP port
+#define FORBIDDEN_SYMBOL_EXCEPTION_printf
+
+#define FORBIDDEN_SYMBOL_EXCEPTION_time_h
+
+#define FORBIDDEN_SYMBOL_EXCEPTION_mkdir
+
+// Avoid clashes with unistd.h
+#define FORBIDDEN_SYMBOL_EXCEPTION_chdir
+#define FORBIDDEN_SYMBOL_EXCEPTION_unlink
+
 #include "backends/fs/psp/psp-fs.h"
 #include "backends/fs/psp/psp-stream.h"
 #include "common/bufferedstream.h"
diff --git a/backends/saves/psp/psp-saves.cpp b/backends/saves/psp/psp-saves.cpp
index 66c63dfdeaf..5752d2fa5f2 100644
--- a/backends/saves/psp/psp-saves.cpp
+++ b/backends/saves/psp/psp-saves.cpp
@@ -23,6 +23,20 @@
  *
  */
 
+// Disable printf override in common/forbidden.h to avoid
+// clashes with pspdebug.h from the PSP SDK.
+// That header file uses
+//   __attribute__((format(printf,1,2)));
+// which gets messed up by our override mechanism; this could
+// be avoided by either changing the PSP SDK to use the equally
+// legal and valid
+//   __attribute__((format(__printf__,1,2)));
+// or by refining our printf override to use a varadic macro
+// (which then wouldn't be portable, though).
+// Anyway, for now we just disable the printf override globally
+// for the PSP port
+#define FORBIDDEN_SYMBOL_EXCEPTION_printf
+
 #include "common/scummsys.h"
 
 #ifdef __PSP__
diff --git a/backends/timer/psp/timer.cpp b/backends/timer/psp/timer.cpp
index 746ff97197e..9e36b434902 100644
--- a/backends/timer/psp/timer.cpp
+++ b/backends/timer/psp/timer.cpp
@@ -23,6 +23,20 @@
  *
  */
 
+// Disable printf override in common/forbidden.h to avoid
+// clashes with pspdebug.h from the PSP SDK.
+// That header file uses
+//   __attribute__((format(printf,1,2)));
+// which gets messed up by our override mechanism; this could
+// be avoided by either changing the PSP SDK to use the equally
+// legal and valid
+//   __attribute__((format(__printf__,1,2)));
+// or by refining our printf override to use a varadic macro
+// (which then wouldn't be portable, though).
+// Anyway, for now we just disable the printf override globally
+// for the PSP port
+#define FORBIDDEN_SYMBOL_EXCEPTION_printf
+
 #include "common/scummsys.h"
 
 #if defined (__PSP__)