diff --git a/Source/Glide64/Combine.cpp b/Source/Glide64/Combine.cpp
index 589fc6dc7..4ebb48c0a 100644
--- a/Source/Glide64/Combine.cpp
+++ b/Source/Glide64/Combine.cpp
@@ -37,6 +37,7 @@
 //
 //****************************************************************
 
+#include <string.h>
 #include "Gfx_1.3.h"
 #include "Util.h"
 #include "Combine.h"
diff --git a/Source/Glide64/Debugger.cpp b/Source/Glide64/Debugger.cpp
index de762f18b..c6bc21189 100644
--- a/Source/Glide64/Debugger.cpp
+++ b/Source/Glide64/Debugger.cpp
@@ -37,6 +37,7 @@
 //
 //****************************************************************
 
+#include <string.h>
 #include "Gfx_1.3.h"
 #include "Util.h"
 #include "Debugger.h"
diff --git a/Source/Glide64/Main.cpp b/Source/Glide64/Main.cpp
index a9fcfd5c2..cb5373de7 100644
--- a/Source/Glide64/Main.cpp
+++ b/Source/Glide64/Main.cpp
@@ -37,6 +37,7 @@
 //
 //****************************************************************
 
+#include <string.h>
 #include <Common/StdString.h>
 #include "Gfx_1.3.h"
 #include "Version.h"
diff --git a/Source/Glide64/MiClWr32b.h b/Source/Glide64/MiClWr32b.h
index ee4307b3b..94224e714 100644
--- a/Source/Glide64/MiClWr32b.h
+++ b/Source/Glide64/MiClWr32b.h
@@ -41,6 +41,8 @@
 //
 //****************************************************************
 
+#include <string.h>
+
 static inline void mirror32bS(uint8_t *tex, uint8_t *start, int width, int height, int mask, int line, int full, int count)
 {
     uint32_t *v8;
diff --git a/Source/Glide64/TexBuffer.cpp b/Source/Glide64/TexBuffer.cpp
index e47aa1db2..0f025e24f 100644
--- a/Source/Glide64/TexBuffer.cpp
+++ b/Source/Glide64/TexBuffer.cpp
@@ -42,6 +42,7 @@
 //
 //****************************************************************
 
+#include <string.h>
 #include "Gfx_1.3.h"
 #include "TexBuffer.h"
 #include "CRC.h"
diff --git a/Source/Glide64/TexLoad.h b/Source/Glide64/TexLoad.h
index 2985e1f9a..568b574e5 100644
--- a/Source/Glide64/TexLoad.h
+++ b/Source/Glide64/TexLoad.h
@@ -42,6 +42,8 @@
 #include "TexLoad16b.h"
 #include "TexLoad32b.h"
 
+#include <string.h>
+
 uint32_t LoadNone(uintptr_t /*dst*/, uintptr_t /*src*/, int /*wid_64*/, int /*height*/, int /*line*/, int /*real_width*/, int /*tile*/)
 {
     memset(texture, 0, 4096 * 4);
diff --git a/Source/Glide64/Util.cpp b/Source/Glide64/Util.cpp
index 013342959..6621a1455 100644
--- a/Source/Glide64/Util.cpp
+++ b/Source/Glide64/Util.cpp
@@ -38,6 +38,8 @@
 //****************************************************************
 
 #include <math.h>
+#include <string.h>
+
 #include "Gfx_1.3.h"
 #include "Util.h"
 #include "Combine.h"
diff --git a/Source/Glide64/rdp.cpp b/Source/Glide64/rdp.cpp
index ada376522..71983f9cd 100644
--- a/Source/Glide64/rdp.cpp
+++ b/Source/Glide64/rdp.cpp
@@ -38,6 +38,8 @@
 //****************************************************************
 
 #include <math.h>
+#include <string.h>
+
 #include "Gfx_1.3.h"
 #include "3dmath.h"
 #include "Util.h"