diff --git a/portlist.cc b/portlist.cc
index e1eca48a1..fe29c7f4e 100644
--- a/portlist.cc
+++ b/portlist.cc
@@ -280,7 +280,7 @@ void serviceDeductions::populateFullVersionString(char *buf, size_t n) const {
 // initializing, and you don't have to free any internal ptrs.  See the
 // serviceDeductions definition for the fields that are populated.
 // Returns 0 if at least a name is available.
-const void PortList::getServiceDeductions(u16 portno, int protocol, struct serviceDeductions *sd) const {
+void PortList::getServiceDeductions(u16 portno, int protocol, struct serviceDeductions *sd) const {
   const Port *port;
 
   port = lookupPort(portno, protocol);
diff --git a/portlist.h b/portlist.h
index fccee8878..624745c15 100644
--- a/portlist.h
+++ b/portlist.h
@@ -270,7 +270,7 @@ class PortList {
   // pass in an allocated struct serviceDeductions (don't worry about initializing, and
   // you don't have to free any internal ptrs.  See the serviceDeductions definition for
   // the fields that are populated.  Returns 0 if at least a name is available.
-  const void getServiceDeductions(u16 portno, int protocol, struct serviceDeductions *sd) const;
+  void getServiceDeductions(u16 portno, int protocol, struct serviceDeductions *sd) const;
 
   /* Sets the results of an RPC scan.  if rpc_status is not
    RPC_STATUS_GOOD_PROGRAM, pass 0 for the other args. This function
diff --git a/service_scan.h b/service_scan.h
index 97411abc9..5c49a2984 100644
--- a/service_scan.h
+++ b/service_scan.h
@@ -268,7 +268,7 @@ class ServiceProbe {
   void setRarity(const char *portstr, int lineno);
 
   // Simply returns the rarity of this probe
-  const int getRarity() { return rarity; }
+  int getRarity() const { return rarity; }
 
   // Takes a match line in a probe description and adds it to the
   // list of matches for this probe.  This function should be passed