diff --git a/channels/rdpgfx/client/rdpgfx_main.c b/channels/rdpgfx/client/rdpgfx_main.c
index ec9501516..040fa5ce7 100644
--- a/channels/rdpgfx/client/rdpgfx_main.c
+++ b/channels/rdpgfx/client/rdpgfx_main.c
@@ -1684,7 +1684,7 @@ UINT DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints)
 		if (!gfx->log)
 		{
 			free(gfx);
-			WLog_ERR(TAG, "Failed to aquire reference to WLog %s", TAG);
+			WLog_ERR(TAG, "Failed to acquire reference to WLog %s", TAG);
 			return ERROR_INTERNAL_ERROR;
 		}
 
diff --git a/winpr/libwinpr/comm/comm_serial_sys.c b/winpr/libwinpr/comm/comm_serial_sys.c
index 950f36f6b..c6b3ad7ec 100644
--- a/winpr/libwinpr/comm/comm_serial_sys.c
+++ b/winpr/libwinpr/comm/comm_serial_sys.c
@@ -1209,7 +1209,7 @@ static BOOL _get_commstatus(WINPR_COMM *pComm, SERIAL_STATUS *pCommstatus)
 	if (ioctl(pComm->fd, TIOCGICOUNT, &currentCounters) < 0)
 	{
 		CommLog_Print(WLOG_WARN, "TIOCGICOUNT ioctl failed, errno=[%d] %s.", errno, strerror(errno));
-		CommLog_Print(WLOG_WARN, "  coult not read counters.");
+		CommLog_Print(WLOG_WARN, "  could not read counters.");
 		
 		if (pComm->permissive)
 		{
diff --git a/winpr/tools/hash-cli/hash.c b/winpr/tools/hash-cli/hash.c
index e295a7cee..d54b30ed9 100644
--- a/winpr/tools/hash-cli/hash.c
+++ b/winpr/tools/hash-cli/hash.c
@@ -116,7 +116,7 @@ int main(int argc, char* argv[])
 
 			if ((version != 1) && (version != 2))
 			{
-				printf("unkown version %d \n\n", version);
+				printf("unknown version %d \n\n", version);
 				usage_and_exit();
 			}
 		}
diff --git a/winpr/tools/makecert-cli/winpr-makecert.1.in b/winpr/tools/makecert-cli/winpr-makecert.1.in
index 302bc6a20..7de91dd44 100644
--- a/winpr/tools/makecert-cli/winpr-makecert.1.in
+++ b/winpr/tools/makecert-cli/winpr-makecert.1.in
@@ -15,7 +15,7 @@ winpr\-makecert \- A tool to create X.509 certificates.
 [\fB-n\fP common_name]
 [\fB-y\fP years]
 [\fB-m\fP months]
-[\fB-len\fP lenth]
+[\fB-len\fP length]
 [\fB-#\fP serial]
 [\fB-a\fP { \fImd5\fP | \fIsha1\fP | \fIsha256\fP | \fIs384\fP | \fIsha512\fP }]
 [\fB-path\fP outputpath]