Change some functions arguments from () -> (void).
diff --git a/programs/progman/group.c b/programs/progman/group.c
index 031d014..c8e79ed 100644
--- a/programs/progman/group.c
+++ b/programs/progman/group.c
@@ -57,7 +57,7 @@
  *           GROUP_RegisterGroupWinClass
  */
 
-ATOM GROUP_RegisterGroupWinClass()
+ATOM GROUP_RegisterGroupWinClass(void)
 {
   WNDCLASS class;
 
@@ -80,7 +80,7 @@
  *           GROUP_NewGroup
  */
 
-VOID GROUP_NewGroup()
+VOID GROUP_NewGroup(void)
 {
   CHAR szName[MAX_PATHNAME_LEN] = "";
   CHAR szFile[MAX_PATHNAME_LEN] = "";
@@ -271,7 +271,7 @@
  *           GROUP_FirstGroup
  */
 
-HLOCAL GROUP_FirstGroup()
+HLOCAL GROUP_FirstGroup(void)
 {
   return(Globals.hGroups);
 }
@@ -294,7 +294,7 @@
  *           GROUP_ActiveGroup
  */
 
-HLOCAL GROUP_ActiveGroup()
+HLOCAL GROUP_ActiveGroup(void)
 {
   return(Globals.hActiveGroup);
 }
diff --git a/programs/progman/main.c b/programs/progman/main.c
index 932cf43..83a346c 100644
--- a/programs/progman/main.c
+++ b/programs/progman/main.c
@@ -110,7 +110,7 @@
  *           MAIN_CreateGroups
  */
 
-static VOID MAIN_CreateGroups()
+static VOID MAIN_CreateGroups(void)
 {
   CHAR buffer[BUFFER_SIZE];
   CHAR szPath[MAX_PATHNAME_LEN];
@@ -144,7 +144,7 @@
  *           MAIN_AutoStart
  */
 
-VOID MAIN_AutoStart()
+VOID MAIN_AutoStart(void)
 {
   CHAR buffer[BUFFER_SIZE];
   HLOCAL hGroup, hProgram;
@@ -344,7 +344,7 @@
  *           MAIN_RegisterMainWinClass
  */
 
-static ATOM MAIN_RegisterMainWinClass()
+static ATOM MAIN_RegisterMainWinClass(void)
 {
   WNDCLASS class;
 
@@ -367,7 +367,7 @@
  *           MAIN_CreateMainWindow
  */
 
-static VOID MAIN_CreateMainWindow()
+static VOID MAIN_CreateMainWindow(void)
 {
   INT  left , top, right, bottom, width, height, show;
   CHAR buffer[100];
@@ -404,7 +404,7 @@
  *           MAIN_CreateMDIWindow
  */
 
-static VOID MAIN_CreateMDIWindow()
+static VOID MAIN_CreateMDIWindow(void)
 {
   CLIENTCREATESTRUCT ccs;
   RECT rect;
diff --git a/programs/progman/program.c b/programs/progman/program.c
index 347378c..bfbbc89 100644
--- a/programs/progman/program.c
+++ b/programs/progman/program.c
@@ -71,7 +71,7 @@
  *           PROGRAM_RegisterProgramWinClass
  */
 
-ATOM PROGRAM_RegisterProgramWinClass()
+ATOM PROGRAM_RegisterProgramWinClass(void)
 {
   WNDCLASS class;