diff --git a/libs/main/core/pistring.h b/libs/main/core/pistring.h
index 3e2aae07..75e06b46 100644
--- a/libs/main/core/pistring.h
+++ b/libs/main/core/pistring.h
@@ -94,19 +94,6 @@ public:
 
 	PIString & operator =(PIString && o) {swap(o); return *this;}
 
-	/*! \brief Return c-string representation of string
-	 * \details Converts content of string to c-string and return
-	 * pointer to first char. This buffer is valid until new convertion
-	 * or execution \a data() or \a toByteArray().\n
-	 * Example: \snippet pistring.cpp PIString::char* */
-	operator const char*() {return data();}
-
-	//! Return symbol at index "pos"
-	PIChar operator [](const int pos) const {return at(pos);}
-
-	//! Return reference to symbol at index "pos"
-	PIChar & operator [](const int pos) {return PIDeque<PIChar>::operator[](pos);}
-
 	//! Compare operator
 	bool operator ==(const PIString & str) const;
 
diff --git a/utils/deploy_tool/main.cpp b/utils/deploy_tool/main.cpp
index e250274f..7eacc6a1 100644
--- a/utils/deploy_tool/main.cpp
+++ b/utils/deploy_tool/main.cpp
@@ -316,7 +316,7 @@ void copyWildcard(const PIString & from, const PIString & to) {
 	PIDir(to).make();
 #ifdef WINDOWS
 	PIFile::FileInfo fi; fi.path = from;
-	system("robocopy \"" + fi.dir() + "\" \"" + to + "\" \"" + fi.name() + "\" /NJH /NJS /NP /NDL /NS /NC /NFL 1> NUL");
+	system(("robocopy \"" + fi.dir() + "\" \"" + to + "\" \"" + fi.name() + "\" /NJH /NJS /NP /NDL /NS /NC /NFL 1> NUL").data());
 #else
 	system(cmd_copy + from + " \"" + to + "/\"" + cmd_suffix);
 #endif
@@ -644,8 +644,8 @@ int main(int argc, char * argv[]) {
 		if (need_cp) {
 			piCout << "copy" << l;
 			if (!fake) {
-				system(cmd_copy + "\"" + l + "\" \"" + out_dir + "\"" + cmd_suffix);
-				system(strip + " --strip-unneeded \"" + out_dir + fi.name() + "\"");
+				system((cmd_copy + "\"" + l + "\" \"" + out_dir + "\"" + cmd_suffix).data());
+				system((strip + " --strip-unneeded \"" + out_dir + fi.name() + "\"").data());
 			}
 		}
 	}
@@ -655,7 +655,7 @@ int main(int argc, char * argv[]) {
 		if (!fd.isEmpty()) {
 			piCout << "copy framework" << f;
 			if (!fake)
-				system(cmd_copydir + "\"" + fd + "\" \"" + out_dir + "\"" + cmd_suffix);
+				system((cmd_copydir + "\"" + fd + "\" \"" + out_dir + "\"" + cmd_suffix).data());
 		} else
 			miss_frameworks << f;
 	}