diff --git a/gfx/video_shader_parse.c b/gfx/video_shader_parse.c
index fa66843fe1..4890e37f8f 100644
--- a/gfx/video_shader_parse.c
+++ b/gfx/video_shader_parse.c
@@ -1147,8 +1147,7 @@ enum rarch_shader_type video_shader_get_type_from_ext(
       }
    }
    if (
-         string_is_equal(ext, "cgp") ||
-         string_is_equal(ext, "CGP")
+         string_is_equal_case_insensitive(ext, "cgp")
          )
    {
       *is_preset = true;
@@ -1180,8 +1179,7 @@ enum rarch_shader_type video_shader_get_type_from_ext(
       }
    }
    if (
-         string_is_equal(ext, "glsl") ||
-         string_is_equal(ext, "GLSL")
+         string_is_equal_case_insensitive(ext, "glsl")
          )
    {
       switch (api)
@@ -1194,8 +1192,7 @@ enum rarch_shader_type video_shader_get_type_from_ext(
       }
    }
    if (
-         string_is_equal(ext, "glslp") ||
-         string_is_equal(ext, "GLSLP")
+         string_is_equal_case_insensitive(ext, "glslp")
          )
    {
       *is_preset = true;
@@ -1209,8 +1206,7 @@ enum rarch_shader_type video_shader_get_type_from_ext(
       }
    }
    if (
-         string_is_equal(ext, "slang") ||
-         string_is_equal(ext, "SLANG")
+         string_is_equal_case_insensitive(ext, "slang")
          )
    {
       switch (api)
@@ -1225,8 +1221,7 @@ enum rarch_shader_type video_shader_get_type_from_ext(
       }
    }
    if (
-         string_is_equal(ext, "slangp") ||
-         string_is_equal(ext, "SLANGP")
+         string_is_equal_case_insensitive(ext, "slangp") 
          )
    {
       *is_preset = true;
diff --git a/libretro-common/include/string/stdstring.h b/libretro-common/include/string/stdstring.h
index 23bf0620b7..17e7209529 100644
--- a/libretro-common/include/string/stdstring.h
+++ b/libretro-common/include/string/stdstring.h
@@ -75,9 +75,28 @@ static INLINE void string_add_between_pairs(char *s, const char *str,
 #define string_is_not_equal_fast(a, b, size) (memcmp(a, b, size) != 0)
 #define string_is_equal_fast(a, b, size) (memcmp(a, b, size) == 0)
 
+static INLINE bool string_is_equal_case_insensitive(const char *a,
+      const char *b)
+{
+   int result              = 0;
+   const unsigned char *p1 = (const unsigned char*)a;
+   const unsigned char *p2 = (const unsigned char*)b;
+
+   if (!a || !b)
+      return false;
+   if (p1 == p2)
+      return true;
+
+   while ((result = tolower (*p1) - tolower (*p2++)) == 0)
+      if (*p1++ == '\0')
+         break;
+
+   return (result == 0);
+}
+
 static INLINE bool string_is_equal_noncase(const char *a, const char *b)
 {
-   int result;
+   int result              = 0;
    const unsigned char *p1 = (const unsigned char*)a;
    const unsigned char *p2 = (const unsigned char*)b;