diff --git a/demod/mod/m10mod.c b/demod/mod/m10mod.c
index 600740b..1a37f37 100644
--- a/demod/mod/m10mod.c
+++ b/demod/mod/m10mod.c
@@ -655,7 +655,7 @@ static float get_Temp(gpx_t *gpx) {
 
     // range/scale 0, 1, 2:                        // M10-pcb
     float Rs[3] = { 12.1e3 ,  36.5e3 ,  475.0e3 }; // bias/series
-    float Rp[3] = { 1e20   , 330.0e3 , 3000.0e3 }; // parallel, Rp[0]=inf
+    float Rp[3] = { 1e20   , 330.0e3 , 2000.0e3 }; // parallel, Rp[0]=inf
 
     ui8_t  scT;     // {0,1,2}, range/scale voltage divider
     ui16_t ADC_RT;  // ADC12 P6.7(A7) , adr_0377h,adr_0376h
diff --git a/demod/multi/m10base.c b/demod/multi/m10base.c
index 0bd8c83..cb87975 100644
--- a/demod/multi/m10base.c
+++ b/demod/multi/m10base.c
@@ -543,7 +543,7 @@ static float get_Temp(gpx_t *gpx) {
 
     // range/scale 0, 1, 2:                        // M10-pcb
     float Rs[3] = { 12.1e3 ,  36.5e3 ,  475.0e3 }; // bias/series
-    float Rp[3] = { 1e20   , 330.0e3 , 3000.0e3 }; // parallel, Rp[0]=inf
+    float Rp[3] = { 1e20   , 330.0e3 , 2000.0e3 }; // parallel, Rp[0]=inf
 
     ui8_t  scT;     // {0,1,2}, range/scale voltage divider
     ui16_t ADC_RT;  // ADC12 P6.7(A7) , adr_0377h,adr_0376h
diff --git a/m10/m10ptu.c b/m10/m10ptu.c
index bc699b9..fa0161e 100644
--- a/m10/m10ptu.c
+++ b/m10/m10ptu.c
@@ -856,7 +856,7 @@ float get_Temp(int csOK) {
 
     // range/scale 0, 1, 2:                        // M10-pcb
     float Rs[3] = { 12.1e3 ,  36.5e3 ,  475.0e3 }; // bias/series
-    float Rp[3] = { 1e20   , 330.0e3 , 3000.0e3 }; // parallel, Rp[0]=inf
+    float Rp[3] = { 1e20   , 330.0e3 , 2000.0e3 }; // parallel, Rp[0]=inf
 
     ui8_t  scT;     // {0,1,2}, range/scale voltage divider
     ui16_t ADC_RT;  // ADC12 P6.7(A7) , adr_0377h,adr_0376h