--- a/src/in_ncsf/SSEQPlayer/Channel.cpp
+++ b/src/in_ncsf/SSEQPlayer/Channel.cpp
@@ -611,10 +611,11 @@
 		double kernel[LANCZOS_WIDTH * 2], kernel_sum = 0.0;
 		int i = LANCZOS_WIDTH, shift = static_cast<int>(std::floor(ratio * LANCZOS_RESOLUTION));
 		int step = this->reg.sampleIncrease > 1.0 ? static_cast<int>(LANCZOS_RESOLUTION / this->reg.sampleIncrease) : LANCZOS_RESOLUTION;
+		int shift_adj = shift * step / LANCZOS_RESOLUTION;
 		for (; i >= -static_cast<int>(LANCZOS_WIDTH - 1); --i)
 		{
 			int pos = i * step;
-			kernel_sum += kernel[i + LANCZOS_WIDTH - 1] = this->lanczos_lut[std::abs(shift - pos)];
+			kernel_sum += kernel[i + LANCZOS_WIDTH - 1] = this->lanczos_lut[std::abs(shift_adj - pos)];
 		}
 		double sum = 0.0;
 		for (i = 0; i < static_cast<int>(LANCZOS_WIDTH * 2); ++i)

--- a/src/in_ncsf/XSFConfig_NCSF.cpp
+++ b/src/in_ncsf/XSFConfig_NCSF.cpp
@@ -42,7 +42,7 @@
 
 unsigned XSFConfig::initSampleRate = 44100;
 std::wstring XSFConfig::commonName = L"NCSF Decoder";
-std::wstring XSFConfig::versionNumber = L"1.7";
+std::wstring XSFConfig::versionNumber = L"1.7.1";
 unsigned XSFConfig_NCSF::initInterpolation = 5;
 std::wstring XSFConfig_NCSF::initMutes = L"0000000000000000";