diff --git a/man2/io_cancel.2 b/man2/io_cancel.2
index e9cc31d9d..d21f4d35f 100644
--- a/man2/io_cancel.2
+++ b/man2/io_cancel.2
@@ -27,10 +27,11 @@ io_cancel \- Cancel an outstanding asynchronous I/O operation
 .ad l
 .hy 0
 
-#include <linux/aio.h>
+#include <libaio.>
+.\"#include <linux/aio.h>
 .sp
 .HP 16
-long\ \fBio_cancel\fR\ (aio_context_t\ \fIctx_id\fR, struct\ iocb\ \fI*iocb\fR, struct\ io_event\ \fI*result\fR);
+int\ \fBio_cancel\fR\ (aio_context_t\ \fIctx_id\fR, struct\ iocb\ \fI*iocb\fR, struct\ io_event\ \fI*result\fR);
 .ad
 .hy
 
diff --git a/man2/io_destroy.2 b/man2/io_destroy.2
index 3735210ee..b581a3241 100644
--- a/man2/io_destroy.2
+++ b/man2/io_destroy.2
@@ -27,10 +27,11 @@ io_destroy \- Destroy an asynchronous I/O context
 .ad l
 .hy 0
 
-#include <linux/aio.h>
+#include <libaio.h>
+.\" #include <linux/aio.h>
 .sp
 .HP 17
-long\ \fBio_destroy\fR\ (aio_context_t\ \fIctx\fR);
+int\ \fBio_destroy\fR\ (aio_context_t\ \fIctx\fR);
 .ad
 .hy
 
diff --git a/man2/io_getevents.2 b/man2/io_getevents.2
index cc4cda9bd..61be40cbb 100644
--- a/man2/io_getevents.2
+++ b/man2/io_getevents.2
@@ -31,11 +31,12 @@ io_getevents \- Read asynchronous I/O events from the completion queue
 
 .sp
 
-#include <linux/aio.h>
+#include <libaio.h>
+.\" #include <linux/aio.h>
 
 .sp
 .HP 19
-long\ \fBio_getevents\fR\ (aio_context_t\ \fIctx_id\fR, long\ \fImin_nr\fR, long\ \fInr\fR, struct\ io_event\ \fI*events\fR, struct\ timespec\ \fI*timeout\fR);
+int\ \fBio_getevents\fR\ (aio_context_t\ \fIctx_id\fR, long\ \fImin_nr\fR, long\ \fInr\fR, struct\ io_event\ \fI*events\fR, struct\ timespec\ \fI*timeout\fR);
 .ad
 .hy
 
diff --git a/man2/io_setup.2 b/man2/io_setup.2
index 8158f7206..ae3f3fcdc 100644
--- a/man2/io_setup.2
+++ b/man2/io_setup.2
@@ -27,10 +27,11 @@ io_setup \- Create an asynchronous I/O context
 .ad l
 .hy 0
 
-#include <linux/aio.h>
+#include <libaio.h>
+.\" #include <linux/aio.h>
 .sp
 .HP 15
-long\ \fBio_setup\fR\ (unsigned\ \fInr_events\fR, aio_context_t\ \fI*ctxp\fR);
+int\ \fBio_setup\fR\ (unsigned\ \fInr_events\fR, aio_context_t\ \fI*ctxp\fR);
 .ad
 .hy
 
diff --git a/man2/io_submit.2 b/man2/io_submit.2
index c18322fae..272eeac81 100644
--- a/man2/io_submit.2
+++ b/man2/io_submit.2
@@ -30,7 +30,7 @@ io_submit \- Submit asynchronous I/O blocks for processing
 #include <linux/aio.h>
 .sp
 .HP 16
-long\ \fBio_submit\fR\ (aio_context_t\ \fIctx_id\fR, long\ \fInr\fR, struct\ iocb\ \fI**iocbpp\fR);
+int\ \fBio_submit\fR\ (aio_context_t\ \fIctx_id\fR, long\ \fInr\fR, struct\ iocb\ \fI**iocbpp\fR);
 .ad
 .hy