diff --git a/rpcs3/Emu/Cell/Modules/cellSsl.h b/rpcs3/Emu/Cell/Modules/cellSsl.h
index 3324e8e001..c8bb7d7443 100644
--- a/rpcs3/Emu/Cell/Modules/cellSsl.h
+++ b/rpcs3/Emu/Cell/Modules/cellSsl.h
@@ -19,7 +19,8 @@ enum CellSslError : u32
 	CELL_SSL_ERROR_UNKNOWN_LOAD_CERT     = 0x80740037
 };
 
-enum // Certificate load flags
+// Certificate load flags
+enum : u64
 {
 	CELL_SSL_LOAD_CERT_SCE01               = 0x0000000000000001ULL,
 	CELL_SSL_LOAD_CERT_SCE02               = 0x0000000000000002ULL,
diff --git a/rpcs3/Emu/Cell/Modules/cellSysutil.cpp b/rpcs3/Emu/Cell/Modules/cellSysutil.cpp
index 2ed5328bdd..18da8df6f0 100644
--- a/rpcs3/Emu/Cell/Modules/cellSysutil.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellSysutil.cpp
@@ -159,7 +159,7 @@ s32 sysutil_check_name_string(const char* src, s32 minlen, s32 maxlen)
 		return -1;
 	}
 
-	for (u32 index = 0;; cur = src[++index])
+	for (s32 index = 0;; cur = src[++index])
 	{
 		if (cur == '\0' || index == maxlen)
 		{
diff --git a/rpcs3/Emu/Cell/PPUInterpreter.cpp b/rpcs3/Emu/Cell/PPUInterpreter.cpp
index d34b700ac7..b5b73d92f5 100644
--- a/rpcs3/Emu/Cell/PPUInterpreter.cpp
+++ b/rpcs3/Emu/Cell/PPUInterpreter.cpp
@@ -4787,7 +4787,7 @@ bool ppu_interpreter::MTFSFI(ppu_thread& ppu, ppu_opcode_t op)
 		{
 			std::array<u32, 16> values{};
 
-			for (size_t i = 0; i < values.size(); i++)
+			for (u32 i = 0; i < values.size(); i++)
 			{
 				u32 value = 0, im = i;
 				value |= (im & 1) << (8 * 3); im >>= 1;