diff --git a/xs/src/libslic3r/GCode/WipeTowerPrusaMM.cpp b/xs/src/libslic3r/GCode/WipeTowerPrusaMM.cpp
index ddc45c669..e49e261d2 100644
--- a/xs/src/libslic3r/GCode/WipeTowerPrusaMM.cpp
+++ b/xs/src/libslic3r/GCode/WipeTowerPrusaMM.cpp
@@ -10,6 +10,13 @@
 #include <strings.h>
 #endif /* __linux */
 
+/*-------ADD THIS ----------------*/
+/*----- Error --> strcasecmp was not declared ----*/
+#ifdef __GNUC__ 
+#include <strings.h>
+#endif
+/*-------ADD THIS ----------------*/
+
 #ifdef _MSC_VER 
 #define strcasecmp _stricmp
 #endif