diff --git a/mongoose.h b/mongoose.h
index 41bc128c..d18a2a9d 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -614,6 +614,7 @@ typedef short int16_t;
 typedef unsigned int uint32_t;
 typedef int int32_t;
 typedef enum { false = 0, true = 1 } bool;
+#define inline __inline
 #else
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/src/arch_win32.h b/src/arch_win32.h
index 90ba7cad..a85b63d4 100644
--- a/src/arch_win32.h
+++ b/src/arch_win32.h
@@ -69,6 +69,7 @@ typedef short int16_t;
 typedef unsigned int uint32_t;
 typedef int int32_t;
 typedef enum { false = 0, true = 1 } bool;
+#define inline __inline
 #else
 #include <stdbool.h>
 #include <stdint.h>