diff --git a/source/src/bot/bot_util.cpp b/source/src/bot/bot_util.cpp
index 233a4329..5257d46a 100644
--- a/source/src/bot/bot_util.cpp
+++ b/source/src/bot/bot_util.cpp
@@ -95,7 +95,7 @@ float RandomFloat (float from, float to)
      if (to <= from)
           return (from);
 
-     return (from + (float) lrand () / (LRAND_MAX / (to - from)));
+     return (from + (float) lrand () / ((float) LRAND_MAX / (to - from)));
 }
 
 // End random functions
diff --git a/source/src/server.cpp b/source/src/server.cpp
index 841b1f5e..18b3c092 100644
--- a/source/src/server.cpp
+++ b/source/src/server.cpp
@@ -3569,7 +3569,7 @@ void process(ENetPacket *packet, int sender, int chan)
                         }
                         else
                         {
-                            strncpy(vi->text,text,MAXTRANS-1);
+                            copystring(vi->text,text,MAXTRANS);
                             vi->num1 = mode;
                             vi->num2 = time;
                         }
@@ -3586,7 +3586,7 @@ void process(ENetPacket *packet, int sender, int chan)
                     {
                         vi->num1 = cn2boot = getint(p);
                         getstring(text, p);
-                        strncpy(vi->text,text,128);
+                        copystring(vi->text,text,128);
                         filtertext(text, text, FTXT__KICKBANREASON);
                         trimtrailingwhitespace(text);
                         vi->action = new kickaction(cn2boot, newstring(text, 128));
@@ -3597,7 +3597,7 @@ void process(ENetPacket *packet, int sender, int chan)
                     {
                         vi->num1 = cn2boot = getint(p);
                         getstring(text, p);
-                        strncpy(vi->text,text,128);
+                        copystring(vi->text,text,128);
                         filtertext(text, text, FTXT__KICKBANREASON);
                         trimtrailingwhitespace(text);
                         vi->action = new banaction(cn2boot, newstring(text, 128));
@@ -3635,7 +3635,7 @@ void process(ENetPacket *packet, int sender, int chan)
                         break;
                     case SA_SERVERDESC:
                         getstring(text, p);
-                        strncpy(vi->text,text,MAXTRANS-1);
+                        copystring(vi->text,text,MAXTRANS);
                         filtertext(text, text, FTXT__SERVDESC);
                         vi->action = new serverdescaction(newstring(text), sender);
                         break;
diff --git a/source/src/serverfiles.h b/source/src/serverfiles.h
index 294c25e1..4c5f7f4a 100644
--- a/source/src/serverfiles.h
+++ b/source/src/serverfiles.h
@@ -1204,8 +1204,8 @@ struct serverforbiddenlist : serverconfigfile
         char *c1 = s1, *c2 = s2;
         if (num < 100 && (n = sscanf(s,"%s %s",s1,s2)) > 0 ) // no warnings
         {
-            strncpy(entries[num][0],c1,FORBIDDENSIZE);
-            if ( n > 1 ) strncpy(entries[num][1],c2,FORBIDDENSIZE);
+            copystring(entries[num][0],c1,FORBIDDENSIZE);
+            if ( n > 1 ) copystring(entries[num][1],c2,FORBIDDENSIZE);
             else entries[num][1][0]='\0';
             num++;
         }
diff --git a/source/src/tools.h b/source/src/tools.h
index d7545d61..fc454db6 100644
--- a/source/src/tools.h
+++ b/source/src/tools.h
@@ -117,7 +117,13 @@ inline int iabs(int n) { return labs(n); }
 typedef char string[MAXSTRLEN];
 
 inline void vformatstring(char *d, const char *fmt, va_list v, int len = MAXSTRLEN) { _vsnprintf(d, len, fmt, v); d[len-1] = 0; }
-inline char *copystring(char *d, const char *s, size_t len = MAXSTRLEN) { strncpy(d, s, len); d[len-1] = 0; return d; }
+inline char *copystring(char *d, const char *s, size_t len = MAXSTRLEN)
+{
+    size_t slen = min(strlen(s), len-1);
+    memcpy(d, s, slen);
+    d[slen] = 0;
+    return d;
+}
 inline char *concatstring(char *d, const char *s, size_t len = MAXSTRLEN) { size_t used = strlen(d); return used < len ? copystring(d+used, s, len-used) : d; }
 extern char *concatformatstring(char *d, const char *s, ...) PRINTFARGS(2, 3);
 
diff --git a/source/src/vertmodel.h b/source/src/vertmodel.h
index 31f79b9b..ac9e1bcd 100644
--- a/source/src/vertmodel.h
+++ b/source/src/vertmodel.h
@@ -721,7 +721,7 @@ struct vertmodel : model
             ntags[numtags].name = newstring(name);
             loopi(numframes)
             {
-                memcpy(&ntags[(numtags + 1)*i], &tags[numtags*i], numtags*sizeof(tag));
+                memcpy((void *)&ntags[(numtags + 1)*i], (void *)&tags[numtags*i], numtags*sizeof(tag));
 
                 tag *t = &ntags[(numtags + 1)*i + numtags];
                 t->pos = m->verts[m->numverts*i + verts[0]];
diff --git a/source/src/worldio.cpp b/source/src/worldio.cpp
index 75d09a0f..7100f882 100644
--- a/source/src/worldio.cpp
+++ b/source/src/worldio.cpp
@@ -634,7 +634,6 @@ void save_world(char *mname, bool skipoptimise, bool addcomfort)
     }
 
     // update (and fix) map header
-    strncpy(hdr.head, "ACMP", 4); // ensure map now declares itself as an AssaultCube map, even if imported as CUBE
     hdr.version = MAPVERSION;
     hdr.headersize = sizeof(header);
     hdr.timestamp = (int) time(NULL);