diff --git a/core/libs/tests/ImageSampleGather.cpp b/core/libs/tests/ImageSampleGather.cpp
index 95d335262..6fa633e3a 100644
--- a/core/libs/tests/ImageSampleGather.cpp
+++ b/core/libs/tests/ImageSampleGather.cpp
@@ -28,6 +28,30 @@ static void CheckPck(std::uint32_t encoding, RdnaOpcode opcode, std::uint32_t dm
     Require(instruction.dataDwordCount == dataComponents);
     Require(IsImageOpcode(instruction.op));
 }
+static void CheckSamplerVccTuple() {
+    const std::array<std::uint32_t, 2> code{0xf0800f08u, 26u << 21u};
+    const RdnaInstruction instruction = DecodeRdnaMimg(0u, code, 0u);
+    Require(instruction.op == RdnaOpcode::ImageSample);
+    Require(instruction.source1.reg == 0u);
+    Require(instruction.source2.kind == RdnaOperandKind::ScalarRegister && instruction.source2.reg == 104u);
+    IrProgram program;
+    auto& block = program.CreateBlock();
+    program.SetEntryBlock(block);
+    TranslationContext context(program, block, 256);
+    context.TranslateInstruction(instruction);
+    Require(program.Resources().memoryInfo.size() == 1u);
+    Require(program.Resources().memoryInfo.back().sampler == 26u);
+}
+static void CheckSamplerVccTupleOverflow() {
+    const std::array<std::uint32_t, 2> code{0xf0800f08u, 27u << 21u};
+    bool rejected = false;
+    try {
+        DecodeRdnaMimg(0u, code, 0u);
+    } catch (const std::runtime_error&) {
+        rejected = true;
+    }
+    Require(rejected);
+}
 static void CheckPckRejectsZeroMask(std::uint32_t encoding) {
     const std::array<std::uint32_t, 2> code{(0x3cu << 26u) | (encoding << 18u) | (1u << 3u), 0u};
     bool rejected = false;
@@ -49,6 +73,8 @@ static void CheckUnsupportedOpcodeDiagnostic(std::uint32_t encoding, std::string
     Require(false);
 }
 int main() {
+    CheckSamplerVccTuple();
+    CheckSamplerVccTupleOverflow();
     Check(0x26u, RdnaOpcode::ImageSampleBCl, 0xfu);
     Check(0x36u, RdnaOpcode::ImageSampleBClO, 0xfu);
     Check(0x35u, RdnaOpcode::ImageSampleBO, 0xfu);
diff --git a/core/shader/recompiler/RdnaDecoder/src/RdnaImageOpDecoder.cpp b/core/shader/recompiler/RdnaDecoder/src/RdnaImageOpDecoder.cpp
index 0ab4c4645..f64c3c6bd 100644
--- a/core/shader/recompiler/RdnaDecoder/src/RdnaImageOpDecoder.cpp
+++ b/core/shader/recompiler/RdnaDecoder/src/RdnaImageOpDecoder.cpp
@@ -417,7 +417,7 @@ RdnaInstruction DecodeRdnaMimg(std::uint32_t programCounter, std::span<const std
     const auto resource = ((word1 >> 16u) & 31u) * 4u;
     const auto sampler = ((word1 >> 21u) & 31u) * 4u;
     const bool r128 = (word0 & 0x8000u) != 0u;
-    if (resource + (r128 ? 4u : 8u) > 106u || ((info.sample || info.gather || opcode == 0x60u) && sampler + 4u > 106u)) {
+    if (resource + (r128 ? 4u : 8u) > 106u || ((info.sample || info.gather || opcode == 0x60u) && sampler > 104u)) {
         throw std::runtime_error("MIMG descriptor register range overflow");
     }
     RdnaInstruction instruction{};