diff --git a/VERSIONS b/VERSIONS
index eb3f0850..84a19a4a 100644
--- a/VERSIONS
+++ b/VERSIONS
@@ -6,6 +6,7 @@ Note that not every commit will be logged here; that is what the Github commit h
 
 
 development head (in the master branch):
+	fix the wiring for calcPi() and calcTajimasD() to call the correct code; they were broken in SLiM 4.3
 
 
 version 4.3 (Eidos version 3.3):
diff --git a/core/slim_functions.cpp b/core/slim_functions.cpp
index ccec58a9..b023208c 100644
--- a/core/slim_functions.cpp
+++ b/core/slim_functions.cpp
@@ -42,6 +42,8 @@ extern const char *gSLiMSourceCode_calcPairHeterozygosity;
 extern const char *gSLiMSourceCode_calcHeterozygosity;
 extern const char *gSLiMSourceCode_calcWattersonsTheta;
 extern const char *gSLiMSourceCode_calcInbreedingLoad;
+extern const char *gSLiMSourceCode_calcPi;
+extern const char *gSLiMSourceCode_calcTajimasD;
 
 
 const std::vector<EidosFunctionSignature_CSP> *Community::SLiMFunctionSignatures(void)
@@ -71,8 +73,8 @@ const std::vector<EidosFunctionSignature_CSP> *Community::SLiMFunctionSignatures
 		sim_func_signatures_.emplace_back((EidosFunctionSignature *)(new EidosFunctionSignature("calcHeterozygosity", gSLiMSourceCode_calcHeterozygosity, kEidosValueMaskFloat | kEidosValueMaskSingleton, "SLiM"))->AddObject("genomes", gSLiM_Genome_Class)->AddObject_ON("muts", gSLiM_Mutation_Class, gStaticEidosValueNULL)->AddInt_OSN("start", gStaticEidosValueNULL)->AddInt_OSN("end", gStaticEidosValueNULL));
 		sim_func_signatures_.emplace_back((EidosFunctionSignature *)(new EidosFunctionSignature("calcWattersonsTheta", gSLiMSourceCode_calcWattersonsTheta, kEidosValueMaskFloat | kEidosValueMaskSingleton, "SLiM"))->AddObject("genomes", gSLiM_Genome_Class)->AddObject_ON("muts", gSLiM_Mutation_Class, gStaticEidosValueNULL)->AddInt_OSN("start", gStaticEidosValueNULL)->AddInt_OSN("end", gStaticEidosValueNULL));
 		sim_func_signatures_.emplace_back((EidosFunctionSignature *)(new EidosFunctionSignature("calcInbreedingLoad", gSLiMSourceCode_calcInbreedingLoad, kEidosValueMaskFloat | kEidosValueMaskSingleton, "SLiM"))->AddObject("genomes", gSLiM_Genome_Class)->AddObject_OSN("mutType", gSLiM_MutationType_Class, gStaticEidosValueNULL));
-		sim_func_signatures_.emplace_back((EidosFunctionSignature *)(new EidosFunctionSignature("calcPi", gSLiMSourceCode_calcWattersonsTheta, kEidosValueMaskFloat | kEidosValueMaskSingleton, "SLiM"))->AddObject("genomes", gSLiM_Genome_Class)->AddObject_ON("muts", gSLiM_Mutation_Class, gStaticEidosValueNULL)->AddInt_OSN("start", gStaticEidosValueNULL)->AddInt_OSN("end", gStaticEidosValueNULL));
-		sim_func_signatures_.emplace_back((EidosFunctionSignature *)(new EidosFunctionSignature("calcTajimasD", gSLiMSourceCode_calcWattersonsTheta, kEidosValueMaskFloat | kEidosValueMaskSingleton, "SLiM"))->AddObject("genomes", gSLiM_Genome_Class)->AddObject_ON("muts", gSLiM_Mutation_Class, gStaticEidosValueNULL)->AddInt_OSN("start", gStaticEidosValueNULL)->AddInt_OSN("end", gStaticEidosValueNULL));
+		sim_func_signatures_.emplace_back((EidosFunctionSignature *)(new EidosFunctionSignature("calcPi", gSLiMSourceCode_calcPi, kEidosValueMaskFloat | kEidosValueMaskSingleton, "SLiM"))->AddObject("genomes", gSLiM_Genome_Class)->AddObject_ON("muts", gSLiM_Mutation_Class, gStaticEidosValueNULL)->AddInt_OSN("start", gStaticEidosValueNULL)->AddInt_OSN("end", gStaticEidosValueNULL));
+		sim_func_signatures_.emplace_back((EidosFunctionSignature *)(new EidosFunctionSignature("calcTajimasD", gSLiMSourceCode_calcTajimasD, kEidosValueMaskFloat | kEidosValueMaskSingleton, "SLiM"))->AddObject("genomes", gSLiM_Genome_Class)->AddObject_ON("muts", gSLiM_Mutation_Class, gStaticEidosValueNULL)->AddInt_OSN("start", gStaticEidosValueNULL)->AddInt_OSN("end", gStaticEidosValueNULL));
 		
 		// Other built-in SLiM functions
 		sim_func_signatures_.emplace_back((EidosFunctionSignature *)(new EidosFunctionSignature("summarizeIndividuals", SLiM_ExecuteFunction_summarizeIndividuals, kEidosValueMaskFloat, "SLiM"))->AddObject("individuals", gSLiM_Individual_Class)->AddInt("dim")->AddNumeric("spatialBounds")->AddString_S("operation")->AddLogicalEquiv_OSN("empty", gStaticEidosValue_Float0)->AddLogical_OS("perUnitArea", gStaticEidosValue_LogicalF)->AddString_OSN("spatiality", gStaticEidosValueNULL));