diff --git a/configure.ac b/configure.ac
index 5492f6bf0..a72f08971 100644
--- a/configure.ac
+++ b/configure.ac
@@ -888,7 +888,6 @@ AM_CONDITIONAL([OLDAPPS], [test "x$enable_oldapps" = xyes])
 
 # Check for a few typdefs:
 AC_TYPE_PID_T
-AC_TYPE_SIGNAL
 
 # sighandler_t is the type of the signal handler on GNU variants,
 # sig_t is the type of a signal handler on 4.4BSD's,
diff --git a/src/frontend/aspice.c b/src/frontend/aspice.c
index 671708b38..7125d64ea 100644
--- a/src/frontend/aspice.c
+++ b/src/frontend/aspice.c
@@ -52,7 +52,7 @@ Author: 1985 Wayne A. Christopher, U. C. Berkeley CAD Group
 #  define SEEK_SET 0
 #endif
 
-static RETSIGTYPE sigchild(void);
+static void sigchild(void);
 
 struct proc {
     int pr_pid;                 /* The pid of the spice job. */
@@ -163,7 +163,7 @@ com_jobs(wordlist *wl)
 }
 
 
-static RETSIGTYPE
+static void
 sigchild(void)
 {
     numchanged++;
diff --git a/src/frontend/evaluate.c b/src/frontend/evaluate.c
index 044f85d51..f38aff246 100644
--- a/src/frontend/evaluate.c
+++ b/src/frontend/evaluate.c
@@ -20,7 +20,7 @@ Author: 1985 Wayne A. Christopher, U. C. Berkeley CAD Group
 #include "ngspice/sim.h"  /* To get SV_VOLTAGE definition */
 
 
-static RETSIGTYPE sig_matherr(void);
+static void sig_matherr(void);
 static struct dvec *apply_func(struct func *func, struct pnode *arg);
 static struct dvec *ft_ternary(struct pnode *node);
 static char *mkcname(char what, char *v1, char *v2);
@@ -33,7 +33,7 @@ static char *mkcname(char what, char *v1, char *v2);
 
 static JMP_BUF matherrbuf;
 
-static RETSIGTYPE
+static void
 sig_matherr(void)
 {
     fprintf(cp_err, "Error: argument out of range for math function\n");
diff --git a/src/frontend/parser/unixcom.c b/src/frontend/parser/unixcom.c
index 6186acae2..6cbc46da7 100644
--- a/src/frontend/parser/unixcom.c
+++ b/src/frontend/parser/unixcom.c
@@ -187,7 +187,7 @@ tryexec(char *name, char *argv[])
 #  endif
 
     int pid, j;
-    RETSIGTYPE (*svint)(), (*svquit)(), (*svtstp)();
+    void (*svint)(), (*svquit)(), (*svtstp)();
 
     pid = vfork();
     if (pid == 0) {
diff --git a/src/frontend/resource.c b/src/frontend/resource.c
index b8013eec9..09b40863b 100644
--- a/src/frontend/resource.c
+++ b/src/frontend/resource.c
@@ -570,7 +570,7 @@ static int get_sysmem(struct sys_mem *memall)
 static JMP_BUF env;
 
 
-static RETSIGTYPE
+static void
 fault(void)
 {
     signal(SIGSEGV, (SIGNAL_FUNCTION) fault);   /* SysV style */
@@ -586,7 +586,7 @@ baseaddr(void)
 #else
     char *low, *high, *at;
     long x;
-    RETSIGTYPE  (*orig_signal)();
+    void  (*orig_signal)();
 
     if (getenv("SPICE_NO_DATASEG_CHECK"))
         return 0;
diff --git a/src/frontend/signal_handler.c b/src/frontend/signal_handler.c
index 5b414e8d0..058c3c352 100644
--- a/src/frontend/signal_handler.c
+++ b/src/frontend/signal_handler.c
@@ -70,7 +70,7 @@ ft_sigintr_cleanup(void)
 
 
 /*  invoke this function upon keyboard interrupt  */
-RETSIGTYPE
+void
 ft_sigintr(void)
 {
     static int interrupt_counter = 0;
@@ -103,7 +103,7 @@ ft_sigintr(void)
 }
 
 
-RETSIGTYPE
+void
 sigfloat(int code)
 {
     fperror("Error", code);
@@ -117,7 +117,7 @@ sigfloat(int code)
 
 #ifdef SIGTSTP
 
-RETSIGTYPE
+void
 sigstop(void)
 {
     gr_clean();
@@ -127,7 +127,7 @@ sigstop(void)
 }
 
 
-RETSIGTYPE
+void
 sigcont(void)
 {
     (void) signal(SIGTSTP, (SIGNAL_FUNCTION) sigstop);
@@ -141,7 +141,7 @@ sigcont(void)
 
 /* Special (void) signal handlers. */
 
-RETSIGTYPE
+void
 sigill(void)
 {
     fprintf(cp_err, "\ninternal error -- illegal instruction\n");
@@ -149,7 +149,7 @@ sigill(void)
 }
 
 
-RETSIGTYPE
+void
 sigbus(void)
 {
     fprintf(cp_err, "\ninternal error -- bus error\n");
@@ -157,7 +157,7 @@ sigbus(void)
 }
 
 
-RETSIGTYPE
+void
 sigsegv(void)
 {
     fprintf(cp_err, "\ninternal error -- segmentation violation\n");
@@ -167,7 +167,7 @@ sigsegv(void)
     fatal();
 }
 
-RETSIGTYPE
+void
 sigsegvsh(void)
 {
     fprintf(cp_err, "\ninternal error -- segmentation violation\n");
@@ -175,7 +175,7 @@ sigsegvsh(void)
 }
 
 
-RETSIGTYPE
+void
 sig_sys(void)
 {
     fprintf(cp_err, "\ninternal error -- bad argument to system call\n");
diff --git a/src/frontend/signal_handler.h b/src/frontend/signal_handler.h
index cfe1eca46..7ef02c6da 100644
--- a/src/frontend/signal_handler.h
+++ b/src/frontend/signal_handler.h
@@ -6,15 +6,15 @@
 #ifndef ngspice_SIGNAL_HANDLER_H
 #define ngspice_SIGNAL_HANDLER_H
 
-RETSIGTYPE ft_sigintr(void);
-RETSIGTYPE sigfloat(int code);
-RETSIGTYPE sigstop(void);
-RETSIGTYPE sigcont(void);
-RETSIGTYPE sigill(void);
-RETSIGTYPE sigbus(void);
-RETSIGTYPE sigsegv(void);
-RETSIGTYPE sigsegvsh(void);
-RETSIGTYPE sig_sys(void);
+void ft_sigintr(void);
+void sigfloat(int code);
+void sigstop(void);
+void sigcont(void);
+void sigill(void);
+void sigbus(void);
+void sigsegv(void);
+void sigsegvsh(void);
+void sig_sys(void);
 
 extern JMP_BUF jbuf;
 
diff --git a/src/include/ngspice/defines.h b/src/include/ngspice/defines.h
index d5dadd650..62e2737bd 100644
--- a/src/include/ngspice/defines.h
+++ b/src/include/ngspice/defines.h
@@ -101,7 +101,7 @@
 #define HAS_TIME_H
 #define HAS_RLIMIT_
 
-
+#define void void
 
 #ifndef SIGNAL_FUNCTION
 # ifdef HAVE_SIGHANDLER_T
@@ -111,7 +111,7 @@
 # elif HAVE___SIGHANDLER_T
 #  define SIGNAL_FUNCTION __sighandler_t
 # else
-#  define SIGNAL_FUNCTION RETSIGTYPE (*)(int)
+#  define SIGNAL_FUNCTION void (*)(int)
 # endif
 #endif
 
diff --git a/visualc/src/include/ngspice/config.h b/visualc/src/include/ngspice/config.h
index 47a327dcc..0381179f1 100644
--- a/visualc/src/include/ngspice/config.h
+++ b/visualc/src/include/ngspice/config.h
@@ -499,9 +499,6 @@
 /* Define if you want to debug pole-zero analysis */
 /* #undef PZDEBUG */
 
-/* Define as the return type of signal handlers (`int' or `void'). */
-#define RETSIGTYPE void
-
 /* Define to the type of arg 1 for `select'. */
 /* #undef SELECT_TYPE_ARG1 */