diff --git a/packages/generator/src/fileCreators/idb-utils/filters/BigIntFilter.ts b/packages/generator/src/fileCreators/idb-utils/filters/BigIntFilter.ts
index ce46035..0568fb0 100644
--- a/packages/generator/src/fileCreators/idb-utils/filters/BigIntFilter.ts
+++ b/packages/generator/src/fileCreators/idb-utils/filters/BigIntFilter.ts
@@ -5,8 +5,13 @@ export function addBigIntFilter(utilsFile: SourceFile, models: readonly Model[])
   const bigIntFields = models.flatMap(({ fields }) => fields).filter((field) => field.type === "BigInt");
   if (bigIntFields.length === 0) return;
 
+  const nonNullableBigIntFieldPresent = bigIntFields.some(({ isRequired }) => isRequired);
   const nullableBigIntFieldPresent = bigIntFields.some(({ isRequired }) => !isRequired);
-  let filterType = "undefined | number | bigint | Prisma.BigIntFilter<unknown>";
+
+  let filterType = "undefined | number | bigint";
+  if (nonNullableBigIntFieldPresent) {
+    filterType += " | Prisma.BigIntFilter<unknown>";
+  }
   if (nullableBigIntFieldPresent) {
     filterType += " | null | Prisma.BigIntNullableFilter<unknown>";
   }
diff --git a/packages/generator/src/fileCreators/idb-utils/filters/BoolFilter.ts b/packages/generator/src/fileCreators/idb-utils/filters/BoolFilter.ts
index 5f729af..cef88b6 100644
--- a/packages/generator/src/fileCreators/idb-utils/filters/BoolFilter.ts
+++ b/packages/generator/src/fileCreators/idb-utils/filters/BoolFilter.ts
@@ -5,8 +5,13 @@ export function addBoolFilter(utilsFile: SourceFile, models: readonly Model[]) {
   const booleanFields = models.flatMap(({ fields }) => fields).filter((field) => field.type === "Boolean");
   if (booleanFields.length === 0) return;
 
+  const nonNullableBooleanFieldPresent = booleanFields.some(({ isRequired }) => isRequired);
   const nullableBooleanFieldPresent = booleanFields.some(({ isRequired }) => !isRequired);
-  let filterType = "undefined | boolean | Prisma.BoolFilter<unknown>";
+
+  let filterType = "undefined | boolean";
+  if (nonNullableBooleanFieldPresent) {
+    filterType += " | Prisma.BoolFilter<unknown>";
+  }
   if (nullableBooleanFieldPresent) {
     filterType += " | null | Prisma.BoolNullableFilter<unknown>";
   }
diff --git a/packages/generator/src/fileCreators/idb-utils/filters/BytesFilter.ts b/packages/generator/src/fileCreators/idb-utils/filters/BytesFilter.ts
index 192b00e..c683e32 100644
--- a/packages/generator/src/fileCreators/idb-utils/filters/BytesFilter.ts
+++ b/packages/generator/src/fileCreators/idb-utils/filters/BytesFilter.ts
@@ -5,8 +5,13 @@ export function addBytesFilter(utilsFile: SourceFile, models: readonly Model[])
   const bytesFields = models.flatMap(({ fields }) => fields).filter((field) => field.type === "Bytes");
   if (bytesFields.length === 0) return;
 
+  const nonNullableBytesFieldPresent = bytesFields.some(({ isRequired }) => isRequired);
   const nullableBytesFieldPresent = bytesFields.some(({ isRequired }) => !isRequired);
-  let filterType = "undefined | Uint8Array | Prisma.BytesFilter<unknown>";
+
+  let filterType = "undefined | Uint8Array";
+  if (nonNullableBytesFieldPresent) {
+    filterType += " | Prisma.BytesFilter<unknown>";
+  }
   if (nullableBytesFieldPresent) {
     filterType += " | null | Prisma.BytesNullableFilter<unknown>";
   }
diff --git a/packages/generator/src/fileCreators/idb-utils/filters/DateTimeFilter.ts b/packages/generator/src/fileCreators/idb-utils/filters/DateTimeFilter.ts
index cb35396..7b243f9 100644
--- a/packages/generator/src/fileCreators/idb-utils/filters/DateTimeFilter.ts
+++ b/packages/generator/src/fileCreators/idb-utils/filters/DateTimeFilter.ts
@@ -5,8 +5,13 @@ export function addDateTimeFilter(utilsFile: SourceFile, models: readonly Model[
   const dateTimeFields = models.flatMap(({ fields }) => fields).filter((field) => field.type === "DateTime");
   if (dateTimeFields.length === 0) return;
 
+  const nonNullableDateTimeFieldPresent = dateTimeFields.some(({ isRequired }) => isRequired);
   const nullableDateTimeFieldPresent = dateTimeFields.some(({ isRequired }) => !isRequired);
-  let filterType = "undefined | Date | string | Prisma.DateTimeFilter<unknown>";
+
+  let filterType = "undefined | Date | string";
+  if (nonNullableDateTimeFieldPresent) {
+    filterType += " | Prisma.DateTimeFilter<unknown>";
+  }
   if (nullableDateTimeFieldPresent) {
     filterType += " | null | Prisma.DateTimeNullableFilter<unknown>";
   }
diff --git a/packages/generator/src/fileCreators/idb-utils/filters/NumberFilter.ts b/packages/generator/src/fileCreators/idb-utils/filters/NumberFilter.ts
index efb46ce..e387036 100644
--- a/packages/generator/src/fileCreators/idb-utils/filters/NumberFilter.ts
+++ b/packages/generator/src/fileCreators/idb-utils/filters/NumberFilter.ts
@@ -9,8 +9,8 @@ export function addNumberFilter(utilsFile: SourceFile, models: readonly Model[])
   if (intFields.length + floatFields.length === 0) return;
   let filterType = "undefined | number";
 
-  if (intFields.length) filterType += "| Prisma.IntFilter<unknown>";
-  if (floatFields.length) filterType += "| Prisma.FloatFilter<unknown>";
+  if (intFields.some(({ isRequired }) => isRequired)) filterType += "| Prisma.IntFilter<unknown>";
+  if (floatFields.some(({ isRequired }) => isRequired)) filterType += "| Prisma.FloatFilter<unknown>";
 
   if (intFields.some(({ isRequired }) => !isRequired)) filterType += "| Prisma.IntNullableFilter<unknown>";
   if (floatFields.some(({ isRequired }) => !isRequired)) filterType += "| Prisma.FloatNullableFilter<unknown>";
diff --git a/packages/generator/src/fileCreators/idb-utils/filters/StringFilter.ts b/packages/generator/src/fileCreators/idb-utils/filters/StringFilter.ts
index bccb51d..297011e 100644
--- a/packages/generator/src/fileCreators/idb-utils/filters/StringFilter.ts
+++ b/packages/generator/src/fileCreators/idb-utils/filters/StringFilter.ts
@@ -5,8 +5,13 @@ export function addStringFilter(utilsFile: SourceFile, models: readonly Model[])
   const stringFields = models.flatMap(({ fields }) => fields).filter((field) => field.type === "String");
   if (stringFields.length === 0) return;
 
+  const nonNullableStringFieldPresent = stringFields.some(({ isRequired }) => isRequired);
   const nullableStringFieldPresent = stringFields.some(({ isRequired }) => !isRequired);
-  let filterType = "undefined | string | Prisma.StringFilter<unknown>";
+
+  let filterType = "undefined | string";
+  if (nonNullableStringFieldPresent) {
+    filterType += " | Prisma.StringFilter<unknown>";
+  }
   if (nullableStringFieldPresent) {
     filterType += " | null | Prisma.StringNullableFilter<unknown>";
   }