diff --git a/headers/os/drivers/KernelExport.h b/headers/os/drivers/KernelExport.h
index 39ef35eef7..f97b7651af 100644
--- a/headers/os/drivers/KernelExport.h
+++ b/headers/os/drivers/KernelExport.h
@@ -197,7 +197,9 @@ extern area_id		map_physical_memory(const char *areaName,
 						uint32 protection, void **_mappedAddress);
 
 /* kernel debugging facilities */
+#if defined(_KERNEL_MODE) || defined(_BOOT_MODE)
 extern void			dprintf(const char *format, ...) _PRINTFLIKE(1, 2);
+#endif
 extern void			dvprintf(const char *format, va_list args);
 extern void			kprintf(const char *fmt, ...) _PRINTFLIKE(1, 2);
 
diff --git a/headers/posix/stdio.h b/headers/posix/stdio.h
index 30288184f1..d6448d712a 100644
--- a/headers/posix/stdio.h
+++ b/headers/posix/stdio.h
@@ -170,6 +170,9 @@ extern ssize_t	getline(char **_line, size_t *_length, FILE *stream);
 
 /* formatted I/O */
 extern int		printf(char const *format, ...) __PRINTFLIKE(1,2);
+#if !defined(_KERNEL_MODE) && !defined(_BOOT_MODE) && !defined(_LOADER_MODE)
+extern int		dprintf(int fd, char const *format, ...) __PRINTFLIKE(2,3);
+#endif
 extern int		fprintf(FILE *stream, char const *format, ...) __PRINTFLIKE(2,3);
 extern int		sprintf(char *string, char const *format, ...) __PRINTFLIKE(2,3);
 extern int		snprintf(char *string, size_t size, char const *format, ...) __PRINTFLIKE(3,4);
diff --git a/src/system/libroot/posix/glibc/stdio-common/Jamfile b/src/system/libroot/posix/glibc/stdio-common/Jamfile
index 3491915a8b..45bda51b09 100644
--- a/src/system/libroot/posix/glibc/stdio-common/Jamfile
+++ b/src/system/libroot/posix/glibc/stdio-common/Jamfile
@@ -23,7 +23,7 @@ for architectureObject in [ MultiArchSubDirSetup ] {
 			_itoa.c
 			_itowa.c
 			asprintf.c
-#			dprintf.c
+			dprintf.c
 			fprintf.c
 			fscanf.c
 			getline.c