diff --git a/include/SDL3/SDL_atomic.h b/include/SDL3/SDL_atomic.h
index 849ccc244a..c7e4e6c397 100644
--- a/include/SDL3/SDL_atomic.h
+++ b/include/SDL3/SDL_atomic.h
@@ -267,7 +267,7 @@ typedef void (*SDL_KernelMemoryBarrierFunc)();
  *
  * It is a struct so people don't accidentally use numeric operations on it.
  */
-typedef struct { int value; } SDL_AtomicInt;
+typedef struct SDL_AtomicInt { int value; } SDL_AtomicInt;
 
 /**
  * Set an atomic variable to a new value if it is currently an old value.
diff --git a/include/SDL3/SDL_guid.h b/include/SDL3/SDL_guid.h
index accb4d9a5c..30abc2741d 100644
--- a/include/SDL3/SDL_guid.h
+++ b/include/SDL3/SDL_guid.h
@@ -52,7 +52,7 @@ extern "C" {
  * GUIDs may be platform-dependent (i.e., the same device may report
  *   different GUIDs on different operating systems).
  */
-typedef struct {
+typedef struct SDL_GUID {
     Uint8 data[16];
 } SDL_GUID;
 
diff --git a/include/SDL3/SDL_test_crc32.h b/include/SDL3/SDL_test_crc32.h
index a4103f5c22..07f89aba28 100644
--- a/include/SDL3/SDL_test_crc32.h
+++ b/include/SDL3/SDL_test_crc32.h
@@ -63,7 +63,7 @@ extern "C" {
 /**
  * Data structure for CRC32 (checksum) computation
  */
-  typedef struct {
+  typedef struct SDLTest_Crc32Context {
     CrcUint32    crc32_table[256]; /* CRC table */
   } SDLTest_Crc32Context;
 
diff --git a/include/SDL3/SDL_test_md5.h b/include/SDL3/SDL_test_md5.h
index 4aa06340be..06a6272bd5 100644
--- a/include/SDL3/SDL_test_md5.h
+++ b/include/SDL3/SDL_test_md5.h
@@ -68,7 +68,7 @@ extern "C" {
   typedef Uint32 MD5UINT4;
 
 /* Data structure for MD5 (Message-Digest) computation */
-  typedef struct {
+  typedef struct SDLTest_Md5Context {
     MD5UINT4  i[2];     /* number of _bits_ handled mod 2^64 */
     MD5UINT4  buf[4];       /* scratch buffer */
     unsigned char in[64];   /* input buffer */
diff --git a/include/SDL3/SDL_test_random.h b/include/SDL3/SDL_test_random.h
index 5c3e84a8dc..73088e138f 100644
--- a/include/SDL3/SDL_test_random.h
+++ b/include/SDL3/SDL_test_random.h
@@ -56,7 +56,7 @@ extern "C" {
 /*
  * Context structure for the random number generator state.
  */
-  typedef struct {
+  typedef struct SDLTest_RandomContext {
     unsigned int a;
     unsigned int x;
     unsigned int c;