diff --git a/usr.bin/make/job.c b/usr.bin/make/job.c
index bf98c9195598..7f7b3dc1c05b 100644
--- a/usr.bin/make/job.c
+++ b/usr.bin/make/job.c
@@ -1095,7 +1095,7 @@ Boolean
 Job_CheckCommands(gn, abortProc)
     GNode          *gn;	    	    /* The target whose commands need
 				     * verifying */
-    void    	 (*abortProc)(char *, ...);
+    void    	 (*abortProc)(const char *, ...);
 			/* Function to abort with message */
 {
     if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
diff --git a/usr.bin/make/job.h b/usr.bin/make/job.h
index 98d7994bb013..6cba4a67d4f2 100644
--- a/usr.bin/make/job.h
+++ b/usr.bin/make/job.h
@@ -221,7 +221,7 @@ extern Boolean	jobFull;    	/* Non-zero if no more jobs should/will start*/
 
 
 void Job_Touch(GNode *, Boolean);
-Boolean Job_CheckCommands(GNode *, void (*abortProc )(char *, ...));
+Boolean Job_CheckCommands(GNode *, void (*abortProc)(const char *, ...));
 void Job_CatchChildren(Boolean);
 void Job_CatchOutput(void);
 void Job_Make(GNode *);
diff --git a/usr.bin/make/main.c b/usr.bin/make/main.c
index 6a035597e336..e8d3d6c64210 100644
--- a/usr.bin/make/main.c
+++ b/usr.bin/make/main.c
@@ -1110,7 +1110,7 @@ Cmd_Exec(cmd, err)
  */
 /* VARARGS */
 void
-Error(char *fmt, ...)
+Error(const char *fmt, ...)
 {
 	va_list ap;
 
@@ -1134,7 +1134,7 @@ Error(char *fmt, ...)
  */
 /* VARARGS */
 void
-Fatal(char *fmt, ...)
+Fatal(const char *fmt, ...)
 {
 	va_list ap;
 
@@ -1165,7 +1165,7 @@ Fatal(char *fmt, ...)
  */
 /* VARARGS */
 void
-Punt(char *fmt, ...)
+Punt(const char *fmt, ...)
 {
 	va_list ap;
 
diff --git a/usr.bin/make/nonints.h b/usr.bin/make/nonints.h
index 24e629b1e570..994756074862 100644
--- a/usr.bin/make/nonints.h
+++ b/usr.bin/make/nonints.h
@@ -65,9 +65,9 @@ void For_Run(void);
 void Main_ParseArgLine(char *);
 int main(int, char **);
 char *Cmd_Exec(char *, char **);
-void Error(char *, ...);
-void Fatal(char *, ...);
-void Punt(char *, ...);
+void Error(const char *, ...);
+void Fatal(const char *, ...);
+void Punt(const char *, ...);
 void DieHorribly(void);
 int PrintAddr(void *, void *);
 void Finish(int);
@@ -81,7 +81,7 @@ void enomem(void);
 int eunlink(const char *);
 
 /* parse.c */
-void Parse_Error(int, char *, ...);
+void Parse_Error(int, const char *, ...);
 Boolean Parse_AnyExport(void);
 Boolean Parse_IsVar(char *);
 void Parse_DoVar(char *, GNode *);
diff --git a/usr.bin/make/parse.c b/usr.bin/make/parse.c
index 730f51c8dfbb..90bdaf0b9b85 100644
--- a/usr.bin/make/parse.c
+++ b/usr.bin/make/parse.c
@@ -306,7 +306,7 @@ ParseFindKeyword (str)
  */
 /* VARARGS */
 void
-Parse_Error(int type, char *fmt, ...)
+Parse_Error(int type, const char *fmt, ...)
 {
 	va_list ap;