diff --git a/src/HomeSpan.h b/src/HomeSpan.h
index 35c1687..3cc2da6 100644
--- a/src/HomeSpan.h
+++ b/src/HomeSpan.h
@@ -138,8 +138,8 @@ struct Span{
   void setControlPin(uint8_t pin){controlPin=pin;}                        // sets Control Pin
   void setStatusPin(uint8_t pin){statusPin=pin;}                          // sets Status Pin
   int getStatusPin(){return(statusPin);}                                  // gets Status Pin
-  void setApSSID(char *ssid){network.apSSID=ssid;}                        // sets Access Point SSID
-  void setApPassword(char *pwd){network.apPassword=pwd;}                  // sets Access Point Password
+  void setApSSID(const char *ssid){network.apSSID=ssid;}                  // sets Access Point SSID
+  void setApPassword(const char *pwd){network.apPassword=pwd;}            // sets Access Point Password
   void setApTimeout(uint16_t nSec){network.lifetime=nSec*1000;}           // sets Access Point Timeout (seconds)
   void setCommandTimeout(uint16_t nSec){comModeLife=nSec*1000;}           // sets Command Mode Timeout (seconds)
   void setLogLevel(uint8_t level){logLevel=level;}                        // sets Log Level for log messages (0=baseline, 1=intermediate, 2=all)